20683575

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 41376816

約数和(自身を除く): 20693241

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 61, 75, 99, 137, 165, 183, 225, 275, 305, 411, 495, 549, 671, 685, 825, 915, 1233, 1507, 1525, 2013, 2055, 2475, 2745, 3355, 3425, 4521, 4575, 6039, 6165, 7535, 8357, 10065, 10275, 13563, 13725, 16775, 22605, 25071, 30195, 30825, 37675, 41785, 50325, 67815, 75213, 91927, 113025, 125355, 150975, 208925, 275781, 339075, 376065, 459635, 626775, 827343, 1378905, 1880325, 2298175, 4136715, 6894525, 20683575]

約数ペア:

[(1, 20683575), (3, 6894525), (5, 4136715), (9, 2298175), (11, 1880325), (15, 1378905), (25, 827343), (33, 626775), (45, 459635), (55, 376065), (61, 339075), (75, 275781), (99, 208925), (137, 150975), (165, 125355), (183, 113025), (225, 91927), (275, 75213), (305, 67815), (411, 50325), (495, 41785), (549, 37675), (671, 30825), (685, 30195), (825, 25071), (915, 22605), (1233, 16775), (1507, 13725), (1525, 13563), (2013, 10275), (2055, 10065), (2475, 8357), (2745, 7535), (3355, 6165), (3425, 6039), (4521, 4575)]