21756390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31531}}^1$

素因数の和:31564

約数の個数: 32

約数和(自身を含む): 54487296

約数和(自身を除く): 32730906

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690, 31531, 63062, 94593, 157655, 189186, 315310, 472965, 725213, 945930, 1450426, 2175639, 3626065, 4351278, 7252130, 10878195, 21756390]

約数ペア:

[(1, 21756390), (2, 10878195), (3, 7252130), (5, 4351278), (6, 3626065), (10, 2175639), (15, 1450426), (23, 945930), (30, 725213), (46, 472965), (69, 315310), (115, 189186), (138, 157655), (230, 94593), (345, 63062), (690, 31531)]