19705725

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{6737}}^1$

素因数の和:6766

約数の個数: 36

約数和(自身を含む): 38015796

約数和(自身を除く): 18310071

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 6737, 20211, 33685, 60633, 87581, 101055, 168425, 262743, 303165, 437905, 505275, 788229, 1313715, 1515825, 2189525, 3941145, 6568575, 19705725]

約数ペア:

[(1, 19705725), (3, 6568575), (5, 3941145), (9, 2189525), (13, 1515825), (15, 1313715), (25, 788229), (39, 505275), (45, 437905), (65, 303165), (75, 262743), (117, 168425), (195, 101055), (225, 87581), (325, 60633), (585, 33685), (975, 20211), (2925, 6737)]