19991830

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{5113}}^1$

素因数の和:5160

約数の個数: 32

約数和(自身を含む): 39766464

約数和(自身を除く): 19774634

約数列:

[1, 2, 5, 10, 17, 23, 34, 46, 85, 115, 170, 230, 391, 782, 1955, 3910, 5113, 10226, 25565, 51130, 86921, 117599, 173842, 235198, 434605, 587995, 869210, 1175990, 1999183, 3998366, 9995915, 19991830]

約数ペア:

[(1, 19991830), (2, 9995915), (5, 3998366), (10, 1999183), (17, 1175990), (23, 869210), (34, 587995), (46, 434605), (85, 235198), (115, 173842), (170, 117599), (230, 86921), (391, 51130), (782, 25565), (1955, 10226), (3910, 5113)]