19669959

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{12781}}^1$

素因数の和:12812

約数の個数: 20

約数和(自身を含む): 30932440

約数和(自身を除く): 11262481

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 12781, 38343, 115029, 242839, 345087, 728517, 1035261, 2185551, 6556653, 19669959]

約数ペア:

[(1, 19669959), (3, 6556653), (9, 2185551), (19, 1035261), (27, 728517), (57, 345087), (81, 242839), (171, 115029), (513, 38343), (1539, 12781)]