21000398538

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1\times {\mathrm{317}}^1$

素因数の和:557

約数の個数: 192

約数和(自身を含む): 52181998848

約数和(自身を除く): 31181600310

約数列:

[1, 2, 3, 6, 7, 14, 21, 23, 42, 46, 49, 69, 97, 98, 101, 138, 147, 161, 194, 202, 291, 294, 303, 317, 322, 483, 582, 606, 634, 679, 707, 951, 966, 1127, 1358, 1414, 1902, 2037, 2121, 2219, 2231, 2254, 2323, 3381, 4074, 4242, 4438, 4462, 4646, 4753, 4949, 6657, 6693, 6762, 6969, 7291, 9506, 9797, 9898, 13314, 13386, 13938, 14259, 14582, 14847, 15533, 15617, 16261, 19594, 21873, 28518, 29391, 29694, 30749, 31066, 31234, 32017, 32522, 43746, 46599, 46851, 48783, 51037, 58782, 61498, 64034, 68579, 92247, 93198, 93702, 96051, 97566, 102074, 109319, 113827, 137158, 153111, 184494, 192102, 205737, 215243, 218638, 224119, 225331, 227654, 306222, 327957, 341481, 357259, 411474, 430486, 448238, 450662, 480053, 645729, 655914, 672357, 675993, 682962, 707227, 714518, 736391, 960106, 1071777, 1291458, 1344714, 1351986, 1414454, 1440159, 1472782, 1506701, 1568833, 1577317, 2121681, 2143554, 2209173, 2880318, 3013402, 3105649, 3137666, 3154634, 4243362, 4418346, 4520103, 4706499, 4731951, 4950589, 5154737, 6211298, 9040206, 9316947, 9412998, 9463902, 9901178, 10309474, 11041219, 14851767, 15464211, 18633894, 21739543, 22082438, 29703534, 30928422, 33123657, 34654123, 36083159, 43479086, 65218629, 66247314, 69308246, 71429927, 72166318, 103962369, 108249477, 130437258, 142859854, 152176801, 207924738, 214289781, 216498954, 304353602, 428579562, 456530403, 500009489, 913060806, 1000018978, 1500028467, 3000056934, 3500066423, 7000132846, 10500199269, 21000398538]

約数ペア:

[(1, 21000398538), (2, 10500199269), (3, 7000132846), (6, 3500066423), (7, 3000056934), (14, 1500028467), (21, 1000018978), (23, 913060806), (42, 500009489), (46, 456530403), (49, 428579562), (69, 304353602), (97, 216498954), (98, 214289781), (101, 207924738), (138, 152176801), (147, 142859854), (161, 130437258), (194, 108249477), (202, 103962369), (291, 72166318), (294, 71429927), (303, 69308246), (317, 66247314), (322, 65218629), (483, 43479086), (582, 36083159), (606, 34654123), (634, 33123657), (679, 30928422), (707, 29703534), (951, 22082438), (966, 21739543), (1127, 18633894), (1358, 15464211), (1414, 14851767), (1902, 11041219), (2037, 10309474), (2121, 9901178), (2219, 9463902), (2231, 9412998), (2254, 9316947), (2323, 9040206), (3381, 6211298), (4074, 5154737), (4242, 4950589), (4438, 4731951), (4462, 4706499), (4646, 4520103), (4753, 4418346), (4949, 4243362), (6657, 3154634), (6693, 3137666), (6762, 3105649), (6969, 3013402), (7291, 2880318), (9506, 2209173), (9797, 2143554), (9898, 2121681), (13314, 1577317), (13386, 1568833), (13938, 1506701), (14259, 1472782), (14582, 1440159), (14847, 1414454), (15533, 1351986), (15617, 1344714), (16261, 1291458), (19594, 1071777), (21873, 960106), (28518, 736391), (29391, 714518), (29694, 707227), (30749, 682962), (31066, 675993), (31234, 672357), (32017, 655914), (32522, 645729), (43746, 480053), (46599, 450662), (46851, 448238), (48783, 430486), (51037, 411474), (58782, 357259), (61498, 341481), (64034, 327957), (68579, 306222), (92247, 227654), (93198, 225331), (93702, 224119), (96051, 218638), (97566, 215243), (102074, 205737), (109319, 192102), (113827, 184494), (137158, 153111)]