21755025

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{3119}}^1$

素因数の和:3166

約数の個数: 36

約数和(自身を含む): 40235520

約数和(自身を除く): 18480495

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 155, 225, 279, 465, 775, 1395, 2325, 3119, 6975, 9357, 15595, 28071, 46785, 77975, 96689, 140355, 233925, 290067, 483445, 701775, 870201, 1450335, 2417225, 4351005, 7251675, 21755025]

約数ペア:

[(1, 21755025), (3, 7251675), (5, 4351005), (9, 2417225), (15, 1450335), (25, 870201), (31, 701775), (45, 483445), (75, 290067), (93, 233925), (155, 140355), (225, 96689), (279, 77975), (465, 46785), (775, 28071), (1395, 15595), (2325, 9357), (3119, 6975)]