21418635

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{181}}^1$

素因数の和:233

約数の個数: 64

約数和(自身を含む): 41932800

約数和(自身を除く): 20514165

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 49, 69, 105, 115, 147, 161, 181, 245, 343, 345, 483, 543, 735, 805, 905, 1029, 1127, 1267, 1715, 2415, 2715, 3381, 3801, 4163, 5145, 5635, 6335, 7889, 8869, 12489, 16905, 19005, 20815, 23667, 26607, 29141, 39445, 44345, 62083, 62445, 87423, 118335, 133035, 145705, 186249, 203987, 310415, 437115, 611961, 931245, 1019935, 1427909, 3059805, 4283727, 7139545, 21418635]

約数ペア:

[(1, 21418635), (3, 7139545), (5, 4283727), (7, 3059805), (15, 1427909), (21, 1019935), (23, 931245), (35, 611961), (49, 437115), (69, 310415), (105, 203987), (115, 186249), (147, 145705), (161, 133035), (181, 118335), (245, 87423), (343, 62445), (345, 62083), (483, 44345), (543, 39445), (735, 29141), (805, 26607), (905, 23667), (1029, 20815), (1127, 19005), (1267, 16905), (1715, 12489), (2415, 8869), (2715, 7889), (3381, 6335), (3801, 5635), (4163, 5145)]