820768545

素因数分解:

$3^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{49429}}^1$

素因数の和:49487

約数の個数: 40

約数和(自身を含む): 1507219560

約数和(自身を除く): 686451015

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 81, 123, 135, 205, 369, 405, 615, 1107, 1845, 3321, 5535, 16605, 49429, 148287, 247145, 444861, 741435, 1334583, 2026589, 2224305, 4003749, 6079767, 6672915, 10132945, 18239301, 20018745, 30398835, 54717903, 91196505, 164153709, 273589515, 820768545]

約数ペア:

[(1, 820768545), (3, 273589515), (5, 164153709), (9, 91196505), (15, 54717903), (27, 30398835), (41, 20018745), (45, 18239301), (81, 10132945), (123, 6672915), (135, 6079767), (205, 4003749), (369, 2224305), (405, 2026589), (615, 1334583), (1107, 741435), (1845, 444861), (3321, 247145), (5535, 148287), (16605, 49429)]