81672640

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{101}}^1$

素因数の和:163

約数の個数: 168

約数和(自身を含む): 236902752

約数和(自身を除く): 155230112

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 64, 70, 76, 80, 95, 101, 112, 133, 140, 152, 160, 190, 202, 224, 266, 280, 304, 320, 361, 380, 404, 448, 505, 532, 560, 608, 665, 707, 722, 760, 808, 1010, 1064, 1120, 1216, 1330, 1414, 1444, 1520, 1616, 1805, 1919, 2020, 2128, 2240, 2527, 2660, 2828, 2888, 3040, 3232, 3535, 3610, 3838, 4040, 4256, 5054, 5320, 5656, 5776, 6080, 6464, 7070, 7220, 7676, 8080, 8512, 9595, 10108, 10640, 11312, 11552, 12635, 13433, 14140, 14440, 15352, 16160, 19190, 20216, 21280, 22624, 23104, 25270, 26866, 28280, 28880, 30704, 32320, 36461, 38380, 40432, 42560, 45248, 50540, 53732, 56560, 57760, 61408, 67165, 72922, 76760, 80864, 101080, 107464, 113120, 115520, 122816, 134330, 145844, 153520, 161728, 182305, 202160, 214928, 226240, 255227, 268660, 291688, 307040, 364610, 404320, 429856, 510454, 537320, 583376, 614080, 729220, 808640, 859712, 1020908, 1074640, 1166752, 1276135, 1458440, 2041816, 2149280, 2333504, 2552270, 2916880, 4083632, 4298560, 5104540, 5833760, 8167264, 10209080, 11667520, 16334528, 20418160, 40836320, 81672640]

約数ペア:

[(1, 81672640), (2, 40836320), (4, 20418160), (5, 16334528), (7, 11667520), (8, 10209080), (10, 8167264), (14, 5833760), (16, 5104540), (19, 4298560), (20, 4083632), (28, 2916880), (32, 2552270), (35, 2333504), (38, 2149280), (40, 2041816), (56, 1458440), (64, 1276135), (70, 1166752), (76, 1074640), (80, 1020908), (95, 859712), (101, 808640), (112, 729220), (133, 614080), (140, 583376), (152, 537320), (160, 510454), (190, 429856), (202, 404320), (224, 364610), (266, 307040), (280, 291688), (304, 268660), (320, 255227), (361, 226240), (380, 214928), (404, 202160), (448, 182305), (505, 161728), (532, 153520), (560, 145844), (608, 134330), (665, 122816), (707, 115520), (722, 113120), (760, 107464), (808, 101080), (1010, 80864), (1064, 76760), (1120, 72922), (1216, 67165), (1330, 61408), (1414, 57760), (1444, 56560), (1520, 53732), (1616, 50540), (1805, 45248), (1919, 42560), (2020, 40432), (2128, 38380), (2240, 36461), (2527, 32320), (2660, 30704), (2828, 28880), (2888, 28280), (3040, 26866), (3232, 25270), (3535, 23104), (3610, 22624), (3838, 21280), (4040, 20216), (4256, 19190), (5054, 16160), (5320, 15352), (5656, 14440), (5776, 14140), (6080, 13433), (6464, 12635), (7070, 11552), (7220, 11312), (7676, 10640), (8080, 10108), (8512, 9595)]