19599980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{3391}}^1$

素因数の和:3434

約数の個数: 36

約数和(自身を含む): 43736448

約数和(自身を除く): 24136468

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 3391, 5780, 6782, 13564, 16955, 33910, 57647, 67820, 115294, 230588, 288235, 576470, 979999, 1152940, 1959998, 3919996, 4899995, 9799990, 19599980]

約数ペア:

[(1, 19599980), (2, 9799990), (4, 4899995), (5, 3919996), (10, 1959998), (17, 1152940), (20, 979999), (34, 576470), (68, 288235), (85, 230588), (170, 115294), (289, 67820), (340, 57647), (578, 33910), (1156, 16955), (1445, 13564), (2890, 6782), (3391, 5780)]