20495960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16529}}^1$

素因数の和:16571

約数の個数: 32

約数和(自身を含む): 47606400

約数和(自身を除く): 27110440

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16529, 33058, 66116, 82645, 132232, 165290, 330580, 512399, 661160, 1024798, 2049596, 2561995, 4099192, 5123990, 10247980, 20495960]

約数ペア:

[(1, 20495960), (2, 10247980), (4, 5123990), (5, 4099192), (8, 2561995), (10, 2049596), (20, 1024798), (31, 661160), (40, 512399), (62, 330580), (124, 165290), (155, 132232), (248, 82645), (310, 66116), (620, 33058), (1240, 16529)]