19671980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{31729}}^1$

素因数の和:31769

約数の個数: 24

約数和(自身を含む): 42645120

約数和(自身を除く): 22973140

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 31729, 63458, 126916, 158645, 317290, 634580, 983599, 1967198, 3934396, 4917995, 9835990, 19671980]

約数ペア:

[(1, 19671980), (2, 9835990), (4, 4917995), (5, 3934396), (10, 1967198), (20, 983599), (31, 634580), (62, 317290), (124, 158645), (155, 126916), (310, 63458), (620, 31729)]