20196403640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{176357}}^1$

素因数の和:176784

約数の個数: 64

約数和(自身を含む): 52060881600

約数和(自身を除く): 31864477960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 409, 818, 1636, 2045, 2863, 3272, 4090, 5726, 8180, 11452, 14315, 16360, 22904, 28630, 57260, 114520, 176357, 352714, 705428, 881785, 1234499, 1410856, 1763570, 2468998, 3527140, 4937996, 6172495, 7054280, 9875992, 12344990, 24689980, 49379960, 72130013, 144260026, 288520052, 360650065, 504910091, 577040104, 721300130, 1009820182, 1442600260, 2019640364, 2524550455, 2885200520, 4039280728, 5049100910, 10098201820, 20196403640]

約数ペア:

[(1, 20196403640), (2, 10098201820), (4, 5049100910), (5, 4039280728), (7, 2885200520), (8, 2524550455), (10, 2019640364), (14, 1442600260), (20, 1009820182), (28, 721300130), (35, 577040104), (40, 504910091), (56, 360650065), (70, 288520052), (140, 144260026), (280, 72130013), (409, 49379960), (818, 24689980), (1636, 12344990), (2045, 9875992), (2863, 7054280), (3272, 6172495), (4090, 4937996), (5726, 3527140), (8180, 2468998), (11452, 1763570), (14315, 1410856), (16360, 1234499), (22904, 881785), (28630, 705428), (57260, 352714), (114520, 176357)]