21686535

素因数分解:

$3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1373}}^1$

素因数の和:1406

約数の個数: 48

約数和(自身を含む): 42011424

約数和(自身を除く): 20324889

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 243, 351, 405, 585, 1053, 1215, 1373, 1755, 3159, 4119, 5265, 6865, 12357, 15795, 17849, 20595, 37071, 53547, 61785, 89245, 111213, 160641, 185355, 267735, 333639, 481923, 556065, 803205, 1445769, 1668195, 2409615, 4337307, 7228845, 21686535]

約数ペア:

[(1, 21686535), (3, 7228845), (5, 4337307), (9, 2409615), (13, 1668195), (15, 1445769), (27, 803205), (39, 556065), (45, 481923), (65, 333639), (81, 267735), (117, 185355), (135, 160641), (195, 111213), (243, 89245), (351, 61785), (405, 53547), (585, 37071), (1053, 20595), (1215, 17849), (1373, 15795), (1755, 12357), (3159, 6865), (4119, 5265)]