981800560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{944039}}^1$

素因数の和:944065

約数の個数: 40

約数和(自身を含む): 2458280160

約数和(自身を除く): 1476479600

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 944039, 1888078, 3776156, 4720195, 7552312, 9440390, 12272507, 15104624, 18880780, 24545014, 37761560, 49090028, 61362535, 75523120, 98180056, 122725070, 196360112, 245450140, 490900280, 981800560]

約数ペア:

[(1, 981800560), (2, 490900280), (4, 245450140), (5, 196360112), (8, 122725070), (10, 98180056), (13, 75523120), (16, 61362535), (20, 49090028), (26, 37761560), (40, 24545014), (52, 18880780), (65, 15104624), (80, 12272507), (104, 9440390), (130, 7552312), (208, 4720195), (260, 3776156), (520, 1888078), (1040, 944039)]