21821830

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{70393}}^1$

素因数の和:70431

約数の個数: 16

約数和(自身を含む): 40546944

約数和(自身を除く): 18725114

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 70393, 140786, 351965, 703930, 2182183, 4364366, 10910915, 21821830]

約数ペア:

[(1, 21821830), (2, 10910915), (5, 4364366), (10, 2182183), (31, 703930), (62, 351965), (155, 140786), (310, 70393)]