20551245

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^2\times {\mathrm{67}}^1$

素因数の和:123

約数の個数: 72

約数和(自身を含む): 39721248

約数和(自身を除く): 19170003

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 67, 121, 143, 165, 169, 195, 201, 335, 363, 429, 507, 605, 715, 737, 845, 871, 1005, 1573, 1815, 1859, 2145, 2211, 2535, 2613, 3685, 4355, 4719, 5577, 7865, 8107, 9295, 9581, 11055, 11323, 13065, 20449, 23595, 24321, 27885, 28743, 33969, 40535, 47905, 56615, 61347, 102245, 105391, 121605, 124553, 143715, 169845, 306735, 316173, 373659, 526955, 622765, 1370083, 1580865, 1868295, 4110249, 6850415, 20551245]

約数ペア:

[(1, 20551245), (3, 6850415), (5, 4110249), (11, 1868295), (13, 1580865), (15, 1370083), (33, 622765), (39, 526955), (55, 373659), (65, 316173), (67, 306735), (121, 169845), (143, 143715), (165, 124553), (169, 121605), (195, 105391), (201, 102245), (335, 61347), (363, 56615), (429, 47905), (507, 40535), (605, 33969), (715, 28743), (737, 27885), (845, 24321), (871, 23595), (1005, 20449), (1573, 13065), (1815, 11323), (1859, 11055), (2145, 9581), (2211, 9295), (2535, 8107), (2613, 7865), (3685, 5577), (4355, 4719)]