19980880

素因数分解:

$2^4\times 5^1\times {\mathrm{379}}^1\times {\mathrm{659}}^1$

素因数の和:1051

約数の個数: 40

約数和(自身を含む): 46648800

約数和(自身を除く): 26667920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 379, 659, 758, 1318, 1516, 1895, 2636, 3032, 3295, 3790, 5272, 6064, 6590, 7580, 10544, 13180, 15160, 26360, 30320, 52720, 249761, 499522, 999044, 1248805, 1998088, 2497610, 3996176, 4995220, 9990440, 19980880]

約数ペア:

[(1, 19980880), (2, 9990440), (4, 4995220), (5, 3996176), (8, 2497610), (10, 1998088), (16, 1248805), (20, 999044), (40, 499522), (80, 249761), (379, 52720), (659, 30320), (758, 26360), (1318, 15160), (1516, 13180), (1895, 10544), (2636, 7580), (3032, 6590), (3295, 6064), (3790, 5272)]