128136640

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{12917}}^1$

素因数の和:12965

約数の個数: 56

約数和(自身を含む): 314992512

約数和(自身を除く): 186855872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 9920, 12917, 25834, 51668, 64585, 103336, 129170, 206672, 258340, 400427, 413344, 516680, 800854, 826688, 1033360, 1601708, 2002135, 2066720, 3203416, 4004270, 4133440, 6406832, 8008540, 12813664, 16017080, 25627328, 32034160, 64068320, 128136640]

約数ペア:

[(1, 128136640), (2, 64068320), (4, 32034160), (5, 25627328), (8, 16017080), (10, 12813664), (16, 8008540), (20, 6406832), (31, 4133440), (32, 4004270), (40, 3203416), (62, 2066720), (64, 2002135), (80, 1601708), (124, 1033360), (155, 826688), (160, 800854), (248, 516680), (310, 413344), (320, 400427), (496, 258340), (620, 206672), (992, 129170), (1240, 103336), (1984, 64585), (2480, 51668), (4960, 25834), (9920, 12917)]