15900520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{12823}}^1$

素因数の和:12865

約数の個数: 32

約数和(自身を含む): 36933120

約数和(自身を除く): 21032600

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 12823, 25646, 51292, 64115, 102584, 128230, 256460, 397513, 512920, 795026, 1590052, 1987565, 3180104, 3975130, 7950260, 15900520]

約数ペア:

[(1, 15900520), (2, 7950260), (4, 3975130), (5, 3180104), (8, 1987565), (10, 1590052), (20, 795026), (31, 512920), (40, 397513), (62, 256460), (124, 128230), (155, 102584), (248, 64115), (310, 51292), (620, 25646), (1240, 12823)]