20921790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{3853}}^1$

素因数の和:4044

約数の個数: 32

約数和(自身を含む): 50502816

約数和(自身を除く): 29581026

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 181, 362, 543, 905, 1086, 1810, 2715, 3853, 5430, 7706, 11559, 19265, 23118, 38530, 57795, 115590, 697393, 1394786, 2092179, 3486965, 4184358, 6973930, 10460895, 20921790]

約数ペア:

[(1, 20921790), (2, 10460895), (3, 6973930), (5, 4184358), (6, 3486965), (10, 2092179), (15, 1394786), (30, 697393), (181, 115590), (362, 57795), (543, 38530), (905, 23118), (1086, 19265), (1810, 11559), (2715, 7706), (3853, 5430)]