20325690

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{419}}^1$

素因数の和:457

約数の個数: 144

約数和(自身を含む): 67223520

約数和(自身を除く): 46897830

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, 18, 21, 22, 30, 33, 35, 42, 45, 49, 55, 63, 66, 70, 77, 90, 98, 99, 105, 110, 126, 147, 154, 165, 198, 210, 231, 245, 294, 315, 330, 385, 419, 441, 462, 490, 495, 539, 630, 693, 735, 770, 838, 882, 990, 1078, 1155, 1257, 1386, 1470, 1617, 2095, 2205, 2310, 2514, 2695, 2933, 3234, 3465, 3771, 4190, 4410, 4609, 4851, 5390, 5866, 6285, 6930, 7542, 8085, 8799, 9218, 9702, 12570, 13827, 14665, 16170, 17598, 18855, 20531, 23045, 24255, 26397, 27654, 29330, 32263, 37710, 41062, 41481, 43995, 46090, 48510, 52794, 61593, 64526, 69135, 82962, 87990, 96789, 102655, 123186, 131985, 138270, 161315, 184779, 193578, 205310, 207405, 225841, 263970, 290367, 307965, 322630, 369558, 414810, 451682, 483945, 580734, 615930, 677523, 923895, 967890, 1129205, 1355046, 1451835, 1847790, 2032569, 2258410, 2903670, 3387615, 4065138, 6775230, 10162845, 20325690]

約数ペア:

[(1, 20325690), (2, 10162845), (3, 6775230), (5, 4065138), (6, 3387615), (7, 2903670), (9, 2258410), (10, 2032569), (11, 1847790), (14, 1451835), (15, 1355046), (18, 1129205), (21, 967890), (22, 923895), (30, 677523), (33, 615930), (35, 580734), (42, 483945), (45, 451682), (49, 414810), (55, 369558), (63, 322630), (66, 307965), (70, 290367), (77, 263970), (90, 225841), (98, 207405), (99, 205310), (105, 193578), (110, 184779), (126, 161315), (147, 138270), (154, 131985), (165, 123186), (198, 102655), (210, 96789), (231, 87990), (245, 82962), (294, 69135), (315, 64526), (330, 61593), (385, 52794), (419, 48510), (441, 46090), (462, 43995), (490, 41481), (495, 41062), (539, 37710), (630, 32263), (693, 29330), (735, 27654), (770, 26397), (838, 24255), (882, 23045), (990, 20531), (1078, 18855), (1155, 17598), (1257, 16170), (1386, 14665), (1470, 13827), (1617, 12570), (2095, 9702), (2205, 9218), (2310, 8799), (2514, 8085), (2695, 7542), (2933, 6930), (3234, 6285), (3465, 5866), (3771, 5390), (4190, 4851), (4410, 4609)]