21587685

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1277}}^1$

素因数の和:1322

約数の個数: 48

約数和(自身を含む): 41959296

約数和(自身を除く): 20371611

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 49, 69, 105, 115, 147, 161, 245, 345, 483, 735, 805, 1127, 1277, 2415, 3381, 3831, 5635, 6385, 8939, 16905, 19155, 26817, 29371, 44695, 62573, 88113, 134085, 146855, 187719, 205597, 312865, 440565, 616791, 938595, 1027985, 1439179, 3083955, 4317537, 7195895, 21587685]

約数ペア:

[(1, 21587685), (3, 7195895), (5, 4317537), (7, 3083955), (15, 1439179), (21, 1027985), (23, 938595), (35, 616791), (49, 440565), (69, 312865), (105, 205597), (115, 187719), (147, 146855), (161, 134085), (245, 88113), (345, 62573), (483, 44695), (735, 29371), (805, 26817), (1127, 19155), (1277, 16905), (2415, 8939), (3381, 6385), (3831, 5635)]