20390360

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6983}}^1$

素因数の和:7067

約数の個数: 32

約数和(自身を含む): 46513440

約数和(自身を除く): 26123080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6983, 13966, 27932, 34915, 55864, 69830, 139660, 279320, 509759, 1019518, 2039036, 2548795, 4078072, 5097590, 10195180, 20390360]

約数ペア:

[(1, 20390360), (2, 10195180), (4, 5097590), (5, 4078072), (8, 2548795), (10, 2039036), (20, 1019518), (40, 509759), (73, 279320), (146, 139660), (292, 69830), (365, 55864), (584, 34915), (730, 27932), (1460, 13966), (2920, 6983)]