19768575

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 34596000

約数和(自身を除く): 14827425

約数列:

[1, 3, 5, 15, 25, 29, 61, 75, 87, 145, 149, 183, 305, 435, 447, 725, 745, 915, 1525, 1769, 2175, 2235, 3725, 4321, 4575, 5307, 8845, 9089, 11175, 12963, 21605, 26535, 27267, 44225, 45445, 64815, 108025, 132675, 136335, 227225, 263581, 324075, 681675, 790743, 1317905, 3953715, 6589525, 19768575]

約数ペア:

[(1, 19768575), (3, 6589525), (5, 3953715), (15, 1317905), (25, 790743), (29, 681675), (61, 324075), (75, 263581), (87, 227225), (145, 136335), (149, 132675), (183, 108025), (305, 64815), (435, 45445), (447, 44225), (725, 27267), (745, 26535), (915, 21605), (1525, 12963), (1769, 11175), (2175, 9089), (2235, 8845), (3725, 5307), (4321, 4575)]