205122820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{5657}}^1$

素因数の和:5717

約数の個数: 72

約数和(自身を含む): 514719576

約数和(自身を除く): 309596756

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 49, 70, 74, 98, 140, 148, 185, 196, 245, 259, 370, 490, 518, 740, 980, 1036, 1295, 1813, 2590, 3626, 5180, 5657, 7252, 9065, 11314, 18130, 22628, 28285, 36260, 39599, 56570, 79198, 113140, 158396, 197995, 209309, 277193, 395990, 418618, 554386, 791980, 837236, 1046545, 1108772, 1385965, 1465163, 2093090, 2771930, 2930326, 4186180, 5543860, 5860652, 7325815, 10256141, 14651630, 20512282, 29303260, 41024564, 51280705, 102561410, 205122820]

約数ペア:

[(1, 205122820), (2, 102561410), (4, 51280705), (5, 41024564), (7, 29303260), (10, 20512282), (14, 14651630), (20, 10256141), (28, 7325815), (35, 5860652), (37, 5543860), (49, 4186180), (70, 2930326), (74, 2771930), (98, 2093090), (140, 1465163), (148, 1385965), (185, 1108772), (196, 1046545), (245, 837236), (259, 791980), (370, 554386), (490, 418618), (518, 395990), (740, 277193), (980, 209309), (1036, 197995), (1295, 158396), (1813, 113140), (2590, 79198), (3626, 56570), (5180, 39599), (5657, 36260), (7252, 28285), (9065, 22628), (11314, 18130)]