20454969700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{647}}^1\times {\mathrm{701}}^1$

素因数の和:1414

約数の個数: 144

約数和(自身を含む): 49751065728

約数和(自身を除く): 29296096028

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 41, 44, 50, 55, 82, 100, 110, 164, 205, 220, 275, 410, 451, 550, 647, 701, 820, 902, 1025, 1100, 1294, 1402, 1804, 2050, 2255, 2588, 2804, 3235, 3505, 4100, 4510, 6470, 7010, 7117, 7711, 9020, 11275, 12940, 14020, 14234, 15422, 16175, 17525, 22550, 26527, 28468, 28741, 30844, 32350, 35050, 35585, 38555, 45100, 53054, 57482, 64700, 70100, 71170, 77110, 106108, 114964, 132635, 142340, 143705, 154220, 177925, 192775, 265270, 287410, 291797, 316151, 355850, 385550, 453547, 530540, 574820, 583594, 632302, 663175, 711700, 718525, 771100, 907094, 1167188, 1264604, 1326350, 1437050, 1458985, 1580755, 1814188, 2267735, 2652700, 2874100, 2917970, 3161510, 4535470, 4989017, 5835940, 6323020, 7294925, 7903775, 9070940, 9978034, 11338675, 14589850, 15807550, 18595427, 19956068, 22677350, 24945085, 29179700, 31615100, 37190854, 45354700, 49890170, 74381708, 92977135, 99780340, 124725425, 185954270, 204549697, 249450850, 371908540, 409099394, 464885675, 498901700, 818198788, 929771350, 1022748485, 1859542700, 2045496970, 4090993940, 5113742425, 10227484850, 20454969700]

約数ペア:

[(1, 20454969700), (2, 10227484850), (4, 5113742425), (5, 4090993940), (10, 2045496970), (11, 1859542700), (20, 1022748485), (22, 929771350), (25, 818198788), (41, 498901700), (44, 464885675), (50, 409099394), (55, 371908540), (82, 249450850), (100, 204549697), (110, 185954270), (164, 124725425), (205, 99780340), (220, 92977135), (275, 74381708), (410, 49890170), (451, 45354700), (550, 37190854), (647, 31615100), (701, 29179700), (820, 24945085), (902, 22677350), (1025, 19956068), (1100, 18595427), (1294, 15807550), (1402, 14589850), (1804, 11338675), (2050, 9978034), (2255, 9070940), (2588, 7903775), (2804, 7294925), (3235, 6323020), (3505, 5835940), (4100, 4989017), (4510, 4535470), (6470, 3161510), (7010, 2917970), (7117, 2874100), (7711, 2652700), (9020, 2267735), (11275, 1814188), (12940, 1580755), (14020, 1458985), (14234, 1437050), (15422, 1326350), (16175, 1264604), (17525, 1167188), (22550, 907094), (26527, 771100), (28468, 718525), (28741, 711700), (30844, 663175), (32350, 632302), (35050, 583594), (35585, 574820), (38555, 530540), (45100, 453547), (53054, 385550), (57482, 355850), (64700, 316151), (70100, 291797), (71170, 287410), (77110, 265270), (106108, 192775), (114964, 177925), (132635, 154220), (142340, 143705)]