19854835

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3967}}^1$

素因数の和:4003

約数の個数: 32

約数和(自身を含む): 31997952

約数和(自身を除く): 12143117

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 3967, 5005, 19835, 27769, 43637, 51571, 138845, 218185, 257855, 305459, 360997, 567281, 1527295, 1804985, 2836405, 3970967, 19854835]

約数ペア:

[(1, 19854835), (5, 3970967), (7, 2836405), (11, 1804985), (13, 1527295), (35, 567281), (55, 360997), (65, 305459), (77, 257855), (91, 218185), (143, 138845), (385, 51571), (455, 43637), (715, 27769), (1001, 19835), (3967, 5005)]