219412120

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89923}}^1$

素因数の和:89995

約数の個数: 32

約数和(自身を含む): 501775920

約数和(自身を除く): 282363800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 89923, 179846, 359692, 449615, 719384, 899230, 1798460, 3596920, 5485303, 10970606, 21941212, 27426515, 43882424, 54853030, 109706060, 219412120]

約数ペア:

[(1, 219412120), (2, 109706060), (4, 54853030), (5, 43882424), (8, 27426515), (10, 21941212), (20, 10970606), (40, 5485303), (61, 3596920), (122, 1798460), (244, 899230), (305, 719384), (488, 449615), (610, 359692), (1220, 179846), (2440, 89923)]