12913540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1999}}^1$

素因数の和:2044

約数の個数: 48

約数和(自身を含む): 30240000

約数和(自身を除く): 17326460

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 646, 1292, 1615, 1999, 3230, 3998, 6460, 7996, 9995, 19990, 33983, 37981, 39980, 67966, 75962, 135932, 151924, 169915, 189905, 339830, 379810, 645677, 679660, 759620, 1291354, 2582708, 3228385, 6456770, 12913540]

約数ペア:

[(1, 12913540), (2, 6456770), (4, 3228385), (5, 2582708), (10, 1291354), (17, 759620), (19, 679660), (20, 645677), (34, 379810), (38, 339830), (68, 189905), (76, 169915), (85, 151924), (95, 135932), (170, 75962), (190, 67966), (323, 39980), (340, 37981), (380, 33983), (646, 19990), (1292, 9995), (1615, 7996), (1999, 6460), (3230, 3998)]