28888040

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1801}}^1$

素因数の和:2213

約数の個数: 32

約数和(自身を含む): 65196360

約数和(自身を除く): 36308320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1604, 1801, 2005, 3208, 3602, 4010, 7204, 8020, 9005, 14408, 16040, 18010, 36020, 72040, 722201, 1444402, 2888804, 3611005, 5777608, 7222010, 14444020, 28888040]

約数ペア:

[(1, 28888040), (2, 14444020), (4, 7222010), (5, 5777608), (8, 3611005), (10, 2888804), (20, 1444402), (40, 722201), (401, 72040), (802, 36020), (1604, 18010), (1801, 16040), (2005, 14408), (3208, 9005), (3602, 8020), (4010, 7204)]