13136980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{191}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 29352960

約数和(自身を除く): 16215980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 181, 190, 191, 362, 380, 382, 724, 764, 905, 955, 1810, 1910, 3439, 3620, 3629, 3820, 6878, 7258, 13756, 14516, 17195, 18145, 34390, 34571, 36290, 68780, 69142, 72580, 138284, 172855, 345710, 656849, 691420, 1313698, 2627396, 3284245, 6568490, 13136980]

約数ペア:

[(1, 13136980), (2, 6568490), (4, 3284245), (5, 2627396), (10, 1313698), (19, 691420), (20, 656849), (38, 345710), (76, 172855), (95, 138284), (181, 72580), (190, 69142), (191, 68780), (362, 36290), (380, 34571), (382, 34390), (724, 18145), (764, 17195), (905, 14516), (955, 13756), (1810, 7258), (1910, 6878), (3439, 3820), (3620, 3629)]