321980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{947}}^1$

素因数の和:973

約数の個数: 24

約数和(自身を含む): 716688

約数和(自身を除く): 394708

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 947, 1894, 3788, 4735, 9470, 16099, 18940, 32198, 64396, 80495, 160990, 321980]

約数ペア:

[(1, 321980), (2, 160990), (4, 80495), (5, 64396), (10, 32198), (17, 18940), (20, 16099), (34, 9470), (68, 4735), (85, 3788), (170, 1894), (340, 947)]