1978420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3191}}^1$

素因数の和:3231

約数の個数: 24

約数和(自身を含む): 4290048

約数和(自身を除く): 2311628

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 3191, 6382, 12764, 15955, 31910, 63820, 98921, 197842, 395684, 494605, 989210, 1978420]

約数ペア:

[(1, 1978420), (2, 989210), (4, 494605), (5, 395684), (10, 197842), (20, 98921), (31, 63820), (62, 31910), (124, 15955), (155, 12764), (310, 6382), (620, 3191)]