31017320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{18913}}^1$

素因数の和:18965

約数の個数: 32

約数和(自身を含む): 71494920

約数和(自身を除く): 40477600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 18913, 37826, 75652, 94565, 151304, 189130, 378260, 756520, 775433, 1550866, 3101732, 3877165, 6203464, 7754330, 15508660, 31017320]

約数ペア:

[(1, 31017320), (2, 15508660), (4, 7754330), (5, 6203464), (8, 3877165), (10, 3101732), (20, 1550866), (40, 775433), (41, 756520), (82, 378260), (164, 189130), (205, 151304), (328, 94565), (410, 75652), (820, 37826), (1640, 18913)]