18989740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:116

約数の個数: 144

約数和(自身を含む): 53625600

約数和(自身を除く): 34635860

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 19, 20, 22, 28, 35, 38, 44, 55, 59, 70, 76, 77, 95, 110, 118, 121, 133, 140, 154, 190, 209, 220, 236, 242, 266, 295, 308, 380, 385, 413, 418, 484, 532, 590, 605, 649, 665, 770, 826, 836, 847, 1045, 1121, 1180, 1210, 1298, 1330, 1463, 1540, 1652, 1694, 2065, 2090, 2242, 2299, 2420, 2596, 2660, 2926, 3245, 3388, 4130, 4180, 4235, 4484, 4543, 4598, 5605, 5852, 6490, 7139, 7315, 7847, 8260, 8470, 9086, 9196, 11210, 11495, 12331, 12980, 14278, 14630, 15694, 16093, 16940, 18172, 22420, 22715, 22990, 24662, 28556, 29260, 31388, 32186, 35695, 39235, 45430, 45980, 49324, 49973, 61655, 64372, 71390, 78470, 80465, 86317, 90860, 99946, 123310, 135641, 142780, 156940, 160930, 172634, 199892, 246620, 249865, 271282, 321860, 345268, 431585, 499730, 542564, 678205, 863170, 949487, 999460, 1356410, 1726340, 1898974, 2712820, 3797948, 4747435, 9494870, 18989740]

約数ペア:

[(1, 18989740), (2, 9494870), (4, 4747435), (5, 3797948), (7, 2712820), (10, 1898974), (11, 1726340), (14, 1356410), (19, 999460), (20, 949487), (22, 863170), (28, 678205), (35, 542564), (38, 499730), (44, 431585), (55, 345268), (59, 321860), (70, 271282), (76, 249865), (77, 246620), (95, 199892), (110, 172634), (118, 160930), (121, 156940), (133, 142780), (140, 135641), (154, 123310), (190, 99946), (209, 90860), (220, 86317), (236, 80465), (242, 78470), (266, 71390), (295, 64372), (308, 61655), (380, 49973), (385, 49324), (413, 45980), (418, 45430), (484, 39235), (532, 35695), (590, 32186), (605, 31388), (649, 29260), (665, 28556), (770, 24662), (826, 22990), (836, 22715), (847, 22420), (1045, 18172), (1121, 16940), (1180, 16093), (1210, 15694), (1298, 14630), (1330, 14278), (1463, 12980), (1540, 12331), (1652, 11495), (1694, 11210), (2065, 9196), (2090, 9086), (2242, 8470), (2299, 8260), (2420, 7847), (2596, 7315), (2660, 7139), (2926, 6490), (3245, 5852), (3388, 5605), (4130, 4598), (4180, 4543), (4235, 4484)]