19707080

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{397}}^1$

素因数の和:498

約数の個数: 64

約数和(自身を含む): 47712240

約数和(自身を除く): 28005160

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 73, 85, 136, 146, 170, 292, 340, 365, 397, 584, 680, 730, 794, 1241, 1460, 1588, 1985, 2482, 2920, 3176, 3970, 4964, 6205, 6749, 7940, 9928, 12410, 13498, 15880, 24820, 26996, 28981, 33745, 49640, 53992, 57962, 67490, 115924, 134980, 144905, 231848, 269960, 289810, 492677, 579620, 985354, 1159240, 1970708, 2463385, 3941416, 4926770, 9853540, 19707080]

約数ペア:

[(1, 19707080), (2, 9853540), (4, 4926770), (5, 3941416), (8, 2463385), (10, 1970708), (17, 1159240), (20, 985354), (34, 579620), (40, 492677), (68, 289810), (73, 269960), (85, 231848), (136, 144905), (146, 134980), (170, 115924), (292, 67490), (340, 57962), (365, 53992), (397, 49640), (584, 33745), (680, 28981), (730, 26996), (794, 24820), (1241, 15880), (1460, 13498), (1588, 12410), (1985, 9928), (2482, 7940), (2920, 6749), (3176, 6205), (3970, 4964)]