21193605

素因数分解:

$3^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{3119}}^1$

素因数の和:3281

約数の個数: 24

約数和(自身を含む): 36990720

約数和(自身を除く): 15797115

約数列:

[1, 3, 5, 9, 15, 45, 151, 453, 755, 1359, 2265, 3119, 6795, 9357, 15595, 28071, 46785, 140355, 470969, 1412907, 2354845, 4238721, 7064535, 21193605]

約数ペア:

[(1, 21193605), (3, 7064535), (5, 4238721), (9, 2354845), (15, 1412907), (45, 470969), (151, 140355), (453, 46785), (755, 28071), (1359, 15595), (2265, 9357), (3119, 6795)]