261994485

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{13103}}^1$

素因数の和:13185

約数の個数: 32

約数和(自身を含む): 442810368

約数和(自身を除く): 180815883

約数列:

[1, 3, 5, 15, 31, 43, 93, 129, 155, 215, 465, 645, 1333, 3999, 6665, 13103, 19995, 39309, 65515, 196545, 406193, 563429, 1218579, 1690287, 2030965, 2817145, 6092895, 8451435, 17466299, 52398897, 87331495, 261994485]

約数ペア:

[(1, 261994485), (3, 87331495), (5, 52398897), (15, 17466299), (31, 8451435), (43, 6092895), (93, 2817145), (129, 2030965), (155, 1690287), (215, 1218579), (465, 563429), (645, 406193), (1333, 196545), (3999, 65515), (6665, 39309), (13103, 19995)]