209856400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{40357}}^1$

素因数の和:40388

約数の個数: 60

約数和(自身を含む): 542976532

約数和(自身を除く): 333120132

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 5200, 40357, 80714, 161428, 201785, 322856, 403570, 524641, 645712, 807140, 1008925, 1049282, 1614280, 2017850, 2098564, 2623205, 3228560, 4035700, 4197128, 5246410, 8071400, 8394256, 10492820, 13116025, 16142800, 20985640, 26232050, 41971280, 52464100, 104928200, 209856400]

約数ペア:

[(1, 209856400), (2, 104928200), (4, 52464100), (5, 41971280), (8, 26232050), (10, 20985640), (13, 16142800), (16, 13116025), (20, 10492820), (25, 8394256), (26, 8071400), (40, 5246410), (50, 4197128), (52, 4035700), (65, 3228560), (80, 2623205), (100, 2098564), (104, 2017850), (130, 1614280), (200, 1049282), (208, 1008925), (260, 807140), (325, 645712), (400, 524641), (520, 403570), (650, 322856), (1040, 201785), (1300, 161428), (2600, 80714), (5200, 40357)]