12728775

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 22569984

約数和(自身を除く): 9841209

約数列:

[1, 3, 5, 15, 23, 25, 47, 69, 75, 115, 141, 157, 235, 345, 471, 575, 705, 785, 1081, 1175, 1725, 2355, 3243, 3525, 3611, 3925, 5405, 7379, 10833, 11775, 16215, 18055, 22137, 27025, 36895, 54165, 81075, 90275, 110685, 169717, 184475, 270825, 509151, 553425, 848585, 2545755, 4242925, 12728775]

約数ペア:

[(1, 12728775), (3, 4242925), (5, 2545755), (15, 848585), (23, 553425), (25, 509151), (47, 270825), (69, 184475), (75, 169717), (115, 110685), (141, 90275), (157, 81075), (235, 54165), (345, 36895), (471, 27025), (575, 22137), (705, 18055), (785, 16215), (1081, 11775), (1175, 10833), (1725, 7379), (2355, 5405), (3243, 3925), (3525, 3611)]