8416400

素因数分解:

$2^4\times 5^2\times {\mathrm{53}}^1\times {\mathrm{397}}^1$

素因数の和:468

約数の個数: 60

約数和(自身を含む): 20653812

約数和(自身を除く): 12237412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 53, 80, 100, 106, 200, 212, 265, 397, 400, 424, 530, 794, 848, 1060, 1325, 1588, 1985, 2120, 2650, 3176, 3970, 4240, 5300, 6352, 7940, 9925, 10600, 15880, 19850, 21041, 21200, 31760, 39700, 42082, 79400, 84164, 105205, 158800, 168328, 210410, 336656, 420820, 526025, 841640, 1052050, 1683280, 2104100, 4208200, 8416400]

約数ペア:

[(1, 8416400), (2, 4208200), (4, 2104100), (5, 1683280), (8, 1052050), (10, 841640), (16, 526025), (20, 420820), (25, 336656), (40, 210410), (50, 168328), (53, 158800), (80, 105205), (100, 84164), (106, 79400), (200, 42082), (212, 39700), (265, 31760), (397, 21200), (400, 21041), (424, 19850), (530, 15880), (794, 10600), (848, 9925), (1060, 7940), (1325, 6352), (1588, 5300), (1985, 4240), (2120, 3970), (2650, 3176)]