12980320

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2617}}^1$

素因数の和:2663

約数の個数: 48

約数和(自身を含む): 31667328

約数和(自身を除く): 18687008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 2617, 4960, 5234, 10468, 13085, 20936, 26170, 41872, 52340, 81127, 83744, 104680, 162254, 209360, 324508, 405635, 418720, 649016, 811270, 1298032, 1622540, 2596064, 3245080, 6490160, 12980320]

約数ペア:

[(1, 12980320), (2, 6490160), (4, 3245080), (5, 2596064), (8, 1622540), (10, 1298032), (16, 811270), (20, 649016), (31, 418720), (32, 405635), (40, 324508), (62, 209360), (80, 162254), (124, 104680), (155, 83744), (160, 81127), (248, 52340), (310, 41872), (496, 26170), (620, 20936), (992, 13085), (1240, 10468), (2480, 5234), (2617, 4960)]