120987860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{123457}}^1$

素因数の和:123480

約数の個数: 36

約数和(自身を含む): 295558452

約数和(自身を除く): 174570592

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 123457, 246914, 493828, 617285, 864199, 1234570, 1728398, 2469140, 3456796, 4320995, 6049393, 8641990, 12098786, 17283980, 24197572, 30246965, 60493930, 120987860]

約数ペア:

[(1, 120987860), (2, 60493930), (4, 30246965), (5, 24197572), (7, 17283980), (10, 12098786), (14, 8641990), (20, 6049393), (28, 4320995), (35, 3456796), (49, 2469140), (70, 1728398), (98, 1234570), (140, 864199), (196, 617285), (245, 493828), (490, 246914), (980, 123457)]