18952840

素因数分解:

$2^3\times 5^1\times {\mathrm{659}}^1\times {\mathrm{719}}^1$

素因数の和:1389

約数の個数: 32

約数和(自身を含む): 42768000

約数和(自身を除く): 23815160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 659, 719, 1318, 1438, 2636, 2876, 3295, 3595, 5272, 5752, 6590, 7190, 13180, 14380, 26360, 28760, 473821, 947642, 1895284, 2369105, 3790568, 4738210, 9476420, 18952840]

約数ペア:

[(1, 18952840), (2, 9476420), (4, 4738210), (5, 3790568), (8, 2369105), (10, 1895284), (20, 947642), (40, 473821), (659, 28760), (719, 26360), (1318, 14380), (1438, 13180), (2636, 7190), (2876, 6590), (3295, 5752), (3595, 5272)]