21423285

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{313}}^1$

素因数の和:356

約数の個数: 60

約数和(自身を含む): 41717412

約数和(自身を除く): 20294127

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 169, 195, 313, 351, 405, 507, 585, 845, 939, 1053, 1521, 1565, 1755, 2535, 2817, 4069, 4563, 4695, 5265, 7605, 8451, 12207, 13689, 14085, 20345, 22815, 25353, 36621, 42255, 52897, 61035, 68445, 109863, 126765, 158691, 183105, 264485, 329589, 476073, 549315, 793455, 1428219, 1647945, 2380365, 4284657, 7141095, 21423285]

約数ペア:

[(1, 21423285), (3, 7141095), (5, 4284657), (9, 2380365), (13, 1647945), (15, 1428219), (27, 793455), (39, 549315), (45, 476073), (65, 329589), (81, 264485), (117, 183105), (135, 158691), (169, 126765), (195, 109863), (313, 68445), (351, 61035), (405, 52897), (507, 42255), (585, 36621), (845, 25353), (939, 22815), (1053, 20345), (1521, 14085), (1565, 13689), (1755, 12207), (2535, 8451), (2817, 7605), (4069, 5265), (4563, 4695)]