18991984316

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{1109}}^1\times {\mathrm{251843}}^1$

素因数の和:252973

約数の個数: 24

約数和(自身を含む): 35222901840

約数和(自身を除く): 16230917524

約数列:

[1, 2, 4, 17, 34, 68, 1109, 2218, 4436, 18853, 37706, 75412, 251843, 503686, 1007372, 4281331, 8562662, 17125324, 279293887, 558587774, 1117175548, 4747996079, 9495992158, 18991984316]

約数ペア:

[(1, 18991984316), (2, 9495992158), (4, 4747996079), (17, 1117175548), (34, 558587774), (68, 279293887), (1109, 17125324), (2218, 8562662), (4436, 4281331), (18853, 1007372), (37706, 503686), (75412, 251843)]