18891710

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{409}}^1$

素因数の和:596

約数の個数: 32

約数和(自身を含む): 35424000

約数和(自身を除く): 16532290

約数列:

[1, 2, 5, 10, 31, 62, 149, 155, 298, 310, 409, 745, 818, 1490, 2045, 4090, 4619, 9238, 12679, 23095, 25358, 46190, 60941, 63395, 121882, 126790, 304705, 609410, 1889171, 3778342, 9445855, 18891710]

約数ペア:

[(1, 18891710), (2, 9445855), (5, 3778342), (10, 1889171), (31, 609410), (62, 304705), (149, 126790), (155, 121882), (298, 63395), (310, 60941), (409, 46190), (745, 25358), (818, 23095), (1490, 12679), (2045, 9238), (4090, 4619)]