18785000

素因数分解:

$2^3\times 5^4\times {\mathrm{13}}^1\times {\mathrm{17}}^2$

素因数の和:73

約数の個数: 120

約数和(自身を含む): 50351070

約数和(自身を除く): 31566070

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 25, 26, 34, 40, 50, 52, 65, 68, 85, 100, 104, 125, 130, 136, 170, 200, 221, 250, 260, 289, 325, 340, 425, 442, 500, 520, 578, 625, 650, 680, 850, 884, 1000, 1105, 1156, 1250, 1300, 1445, 1625, 1700, 1768, 2125, 2210, 2312, 2500, 2600, 2890, 3250, 3400, 3757, 4250, 4420, 5000, 5525, 5780, 6500, 7225, 7514, 8125, 8500, 8840, 10625, 11050, 11560, 13000, 14450, 15028, 16250, 17000, 18785, 21250, 22100, 27625, 28900, 30056, 32500, 36125, 37570, 42500, 44200, 55250, 57800, 65000, 72250, 75140, 85000, 93925, 110500, 138125, 144500, 150280, 180625, 187850, 221000, 276250, 289000, 361250, 375700, 469625, 552500, 722500, 751400, 939250, 1105000, 1445000, 1878500, 2348125, 3757000, 4696250, 9392500, 18785000]

約数ペア:

[(1, 18785000), (2, 9392500), (4, 4696250), (5, 3757000), (8, 2348125), (10, 1878500), (13, 1445000), (17, 1105000), (20, 939250), (25, 751400), (26, 722500), (34, 552500), (40, 469625), (50, 375700), (52, 361250), (65, 289000), (68, 276250), (85, 221000), (100, 187850), (104, 180625), (125, 150280), (130, 144500), (136, 138125), (170, 110500), (200, 93925), (221, 85000), (250, 75140), (260, 72250), (289, 65000), (325, 57800), (340, 55250), (425, 44200), (442, 42500), (500, 37570), (520, 36125), (578, 32500), (625, 30056), (650, 28900), (680, 27625), (850, 22100), (884, 21250), (1000, 18785), (1105, 17000), (1156, 16250), (1250, 15028), (1300, 14450), (1445, 13000), (1625, 11560), (1700, 11050), (1768, 10625), (2125, 8840), (2210, 8500), (2312, 8125), (2500, 7514), (2600, 7225), (2890, 6500), (3250, 5780), (3400, 5525), (3757, 5000), (4250, 4420)]