21303425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:194

約数の個数: 48

約数和(自身を含む): 31872960

約数和(自身を除く): 10569535

約数列:

[1, 5, 11, 13, 25, 55, 59, 65, 101, 143, 275, 295, 325, 505, 649, 715, 767, 1111, 1313, 1475, 2525, 3245, 3575, 3835, 5555, 5959, 6565, 8437, 14443, 16225, 19175, 27775, 29795, 32825, 42185, 65549, 72215, 77467, 148975, 210925, 327745, 361075, 387335, 852137, 1638725, 1936675, 4260685, 21303425]

約数ペア:

[(1, 21303425), (5, 4260685), (11, 1936675), (13, 1638725), (25, 852137), (55, 387335), (59, 361075), (65, 327745), (101, 210925), (143, 148975), (275, 77467), (295, 72215), (325, 65549), (505, 42185), (649, 32825), (715, 29795), (767, 27775), (1111, 19175), (1313, 16225), (1475, 14443), (2525, 8437), (3245, 6565), (3575, 5959), (3835, 5555)]