18979785

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{12781}}^1$

素因数の和:12806

約数の個数: 32

約数和(自身を含む): 36812160

約数和(自身を除く): 17832375

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 99, 135, 165, 297, 495, 1485, 12781, 38343, 63905, 115029, 140591, 191715, 345087, 421773, 575145, 702955, 1265319, 1725435, 2108865, 3795957, 6326595, 18979785]

約数ペア:

[(1, 18979785), (3, 6326595), (5, 3795957), (9, 2108865), (11, 1725435), (15, 1265319), (27, 702955), (33, 575145), (45, 421773), (55, 345087), (99, 191715), (135, 140591), (165, 115029), (297, 63905), (495, 38343), (1485, 12781)]