18498800

素因数分解:

$2^4\times 5^2\times {\mathrm{103}}^1\times {\mathrm{449}}^1$

素因数の和:570

約数の個数: 60

約数和(自身を含む): 44974800

約数和(自身を除く): 26476000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 103, 200, 206, 400, 412, 449, 515, 824, 898, 1030, 1648, 1796, 2060, 2245, 2575, 3592, 4120, 4490, 5150, 7184, 8240, 8980, 10300, 11225, 17960, 20600, 22450, 35920, 41200, 44900, 46247, 89800, 92494, 179600, 184988, 231235, 369976, 462470, 739952, 924940, 1156175, 1849880, 2312350, 3699760, 4624700, 9249400, 18498800]

約数ペア:

[(1, 18498800), (2, 9249400), (4, 4624700), (5, 3699760), (8, 2312350), (10, 1849880), (16, 1156175), (20, 924940), (25, 739952), (40, 462470), (50, 369976), (80, 231235), (100, 184988), (103, 179600), (200, 92494), (206, 89800), (400, 46247), (412, 44900), (449, 41200), (515, 35920), (824, 22450), (898, 20600), (1030, 17960), (1648, 11225), (1796, 10300), (2060, 8980), (2245, 8240), (2575, 7184), (3592, 5150), (4120, 4490)]