21697065

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{317}}^1$

素因数の和:360

約数の個数: 60

約数和(自身を含む): 42248844

約数和(自身を除く): 20551779

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 169, 195, 317, 351, 405, 507, 585, 845, 951, 1053, 1521, 1585, 1755, 2535, 2853, 4121, 4563, 4755, 5265, 7605, 8559, 12363, 13689, 14265, 20605, 22815, 25677, 37089, 42795, 53573, 61815, 68445, 111267, 128385, 160719, 185445, 267865, 333801, 482157, 556335, 803595, 1446471, 1669005, 2410785, 4339413, 7232355, 21697065]

約数ペア:

[(1, 21697065), (3, 7232355), (5, 4339413), (9, 2410785), (13, 1669005), (15, 1446471), (27, 803595), (39, 556335), (45, 482157), (65, 333801), (81, 267865), (117, 185445), (135, 160719), (169, 128385), (195, 111267), (317, 68445), (351, 61815), (405, 53573), (507, 42795), (585, 37089), (845, 25677), (951, 22815), (1053, 20605), (1521, 14265), (1585, 13689), (1755, 12363), (2535, 8559), (2853, 7605), (4121, 5265), (4563, 4755)]