28678455

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{419}}^1$

素因数の和:462

約数の個数: 60

約数和(自身を含む): 55800360

約数和(自身を除く): 27121905

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 169, 195, 351, 405, 419, 507, 585, 845, 1053, 1257, 1521, 1755, 2095, 2535, 3771, 4563, 5265, 5447, 6285, 7605, 11313, 13689, 16341, 18855, 22815, 27235, 33939, 49023, 56565, 68445, 70811, 81705, 147069, 169695, 212433, 245115, 354055, 441207, 637299, 735345, 1062165, 1911897, 2206035, 3186495, 5735691, 9559485, 28678455]

約数ペア:

[(1, 28678455), (3, 9559485), (5, 5735691), (9, 3186495), (13, 2206035), (15, 1911897), (27, 1062165), (39, 735345), (45, 637299), (65, 441207), (81, 354055), (117, 245115), (135, 212433), (169, 169695), (195, 147069), (351, 81705), (405, 70811), (419, 68445), (507, 56565), (585, 49023), (845, 33939), (1053, 27235), (1257, 22815), (1521, 18855), (1755, 16341), (2095, 13689), (2535, 11313), (3771, 7605), (4563, 6285), (5265, 5447)]