12721665280

素因数分解:

$2^8\times 5^1\times {\mathrm{9938801}}^1$

素因数の和:9938822

約数の個数: 36

約数和(自身を含む): 30472366932

約数和(自身を除く): 17750701652

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 9938801, 19877602, 39755204, 49694005, 79510408, 99388010, 159020816, 198776020, 318041632, 397552040, 636083264, 795104080, 1272166528, 1590208160, 2544333056, 3180416320, 6360832640, 12721665280]

約数ペア:

[(1, 12721665280), (2, 6360832640), (4, 3180416320), (5, 2544333056), (8, 1590208160), (10, 1272166528), (16, 795104080), (20, 636083264), (32, 397552040), (40, 318041632), (64, 198776020), (80, 159020816), (128, 99388010), (160, 79510408), (256, 49694005), (320, 39755204), (640, 19877602), (1280, 9938801)]