20121525

素因数分解:

$3^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{2417}}^1$

素因数の和:2470

約数の個数: 36

約数和(自身を含む): 37029252

約数和(自身を除く): 16907727

約数列:

[1, 3, 5, 9, 15, 25, 37, 45, 75, 111, 185, 225, 333, 555, 925, 1665, 2417, 2775, 7251, 8325, 12085, 21753, 36255, 60425, 89429, 108765, 181275, 268287, 447145, 543825, 804861, 1341435, 2235725, 4024305, 6707175, 20121525]

約数ペア:

[(1, 20121525), (3, 6707175), (5, 4024305), (9, 2235725), (15, 1341435), (25, 804861), (37, 543825), (45, 447145), (75, 268287), (111, 181275), (185, 108765), (225, 89429), (333, 60425), (555, 36255), (925, 21753), (1665, 12085), (2417, 8325), (2775, 7251)]