27880280

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{9817}}^1$

素因数の和:9899

約数の個数: 32

約数和(自身を含む): 63620640

約数和(自身を除く): 35740360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 9817, 19634, 39268, 49085, 78536, 98170, 196340, 392680, 697007, 1394014, 2788028, 3485035, 5576056, 6970070, 13940140, 27880280]

約数ペア:

[(1, 27880280), (2, 13940140), (4, 6970070), (5, 5576056), (8, 3485035), (10, 2788028), (20, 1394014), (40, 697007), (71, 392680), (142, 196340), (284, 98170), (355, 78536), (568, 49085), (710, 39268), (1420, 19634), (2840, 9817)]