387940960

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{220421}}^1$

素因数の和:220447

約数の個数: 48

約数和(自身を含む): 999834192

約数和(自身を除く): 611893232

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 220421, 440842, 881684, 1102105, 1763368, 2204210, 2424631, 3526736, 4408420, 4849262, 7053472, 8816840, 9698524, 12123155, 17633680, 19397048, 24246310, 35267360, 38794096, 48492620, 77588192, 96985240, 193970480, 387940960]

約数ペア:

[(1, 387940960), (2, 193970480), (4, 96985240), (5, 77588192), (8, 48492620), (10, 38794096), (11, 35267360), (16, 24246310), (20, 19397048), (22, 17633680), (32, 12123155), (40, 9698524), (44, 8816840), (55, 7053472), (80, 4849262), (88, 4408420), (110, 3526736), (160, 2424631), (176, 2204210), (220, 1763368), (352, 1102105), (440, 881684), (880, 440842), (1760, 220421)]