638496760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{23789}}^1$

素因数の和:23872

約数の個数: 64

約数和(自身を含む): 1592978400

約数和(自身を除く): 954481640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 88, 110, 122, 220, 244, 305, 440, 488, 610, 671, 1220, 1342, 2440, 2684, 3355, 5368, 6710, 13420, 23789, 26840, 47578, 95156, 118945, 190312, 237890, 261679, 475780, 523358, 951560, 1046716, 1308395, 1451129, 2093432, 2616790, 2902258, 5233580, 5804516, 7255645, 10467160, 11609032, 14511290, 15962419, 29022580, 31924838, 58045160, 63849676, 79812095, 127699352, 159624190, 319248380, 638496760]

約数ペア:

[(1, 638496760), (2, 319248380), (4, 159624190), (5, 127699352), (8, 79812095), (10, 63849676), (11, 58045160), (20, 31924838), (22, 29022580), (40, 15962419), (44, 14511290), (55, 11609032), (61, 10467160), (88, 7255645), (110, 5804516), (122, 5233580), (220, 2902258), (244, 2616790), (305, 2093432), (440, 1451129), (488, 1308395), (610, 1046716), (671, 951560), (1220, 523358), (1342, 475780), (2440, 261679), (2684, 237890), (3355, 190312), (5368, 118945), (6710, 95156), (13420, 47578), (23789, 26840)]