21106942720

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^2\times {\mathrm{17159}}^1$

素因数の和:17242

約数の個数: 108

約数和(自身を含む): 52244272080

約数和(自身を除く): 31137329360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 961, 992, 1240, 1280, 1922, 1984, 2480, 3844, 3968, 4805, 4960, 7688, 7936, 9610, 9920, 15376, 17159, 19220, 19840, 30752, 34318, 38440, 39680, 61504, 68636, 76880, 85795, 123008, 137272, 153760, 171590, 246016, 274544, 307520, 343180, 531929, 549088, 615040, 686360, 1063858, 1098176, 1230080, 1372720, 2127716, 2196352, 2659645, 2745440, 4255432, 4392704, 5319290, 5490880, 8510864, 10638580, 10981760, 16489799, 17021728, 21277160, 21963520, 32979598, 34043456, 42554320, 65959196, 68086912, 82448995, 85108640, 131918392, 136173824, 164897990, 170217280, 263836784, 329795980, 340434560, 527673568, 659591960, 680869120, 1055347136, 1319183920, 2110694272, 2638367840, 4221388544, 5276735680, 10553471360, 21106942720]

約数ペア:

[(1, 21106942720), (2, 10553471360), (4, 5276735680), (5, 4221388544), (8, 2638367840), (10, 2110694272), (16, 1319183920), (20, 1055347136), (31, 680869120), (32, 659591960), (40, 527673568), (62, 340434560), (64, 329795980), (80, 263836784), (124, 170217280), (128, 164897990), (155, 136173824), (160, 131918392), (248, 85108640), (256, 82448995), (310, 68086912), (320, 65959196), (496, 42554320), (620, 34043456), (640, 32979598), (961, 21963520), (992, 21277160), (1240, 17021728), (1280, 16489799), (1922, 10981760), (1984, 10638580), (2480, 8510864), (3844, 5490880), (3968, 5319290), (4805, 4392704), (4960, 4255432), (7688, 2745440), (7936, 2659645), (9610, 2196352), (9920, 2127716), (15376, 1372720), (17159, 1230080), (19220, 1098176), (19840, 1063858), (30752, 686360), (34318, 615040), (38440, 549088), (39680, 531929), (61504, 343180), (68636, 307520), (76880, 274544), (85795, 246016), (123008, 171590), (137272, 153760)]