20166975

素因数分解:

$3^4\times 5^2\times {\mathrm{23}}^1\times {\mathrm{433}}^1$

素因数の和:478

約数の個数: 60

約数和(自身を含む): 39070416

約数和(自身を除く): 18903441

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 81, 115, 135, 207, 225, 345, 405, 433, 575, 621, 675, 1035, 1299, 1725, 1863, 2025, 2165, 3105, 3897, 5175, 6495, 9315, 9959, 10825, 11691, 15525, 19485, 29877, 32475, 35073, 46575, 49795, 58455, 89631, 97425, 149385, 175365, 248975, 268893, 292275, 448155, 746925, 806679, 876825, 1344465, 2240775, 4033395, 6722325, 20166975]

約数ペア:

[(1, 20166975), (3, 6722325), (5, 4033395), (9, 2240775), (15, 1344465), (23, 876825), (25, 806679), (27, 746925), (45, 448155), (69, 292275), (75, 268893), (81, 248975), (115, 175365), (135, 149385), (207, 97425), (225, 89631), (345, 58455), (405, 49795), (433, 46575), (575, 35073), (621, 32475), (675, 29877), (1035, 19485), (1299, 15525), (1725, 11691), (1863, 10825), (2025, 9959), (2165, 9315), (3105, 6495), (3897, 5175)]