221131275

素因数分解:

$3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{317}}^1$

素因数の和:532

約数の個数: 48

約数和(自身を含む): 374761728

約数和(自身を除く): 153630453

約数列:

[1, 3, 5, 15, 25, 71, 75, 131, 213, 317, 355, 393, 655, 951, 1065, 1585, 1775, 1965, 3275, 4755, 5325, 7925, 9301, 9825, 22507, 23775, 27903, 41527, 46505, 67521, 112535, 124581, 139515, 207635, 232525, 337605, 562675, 622905, 697575, 1038175, 1688025, 2948417, 3114525, 8845251, 14742085, 44226255, 73710425, 221131275]

約数ペア:

[(1, 221131275), (3, 73710425), (5, 44226255), (15, 14742085), (25, 8845251), (71, 3114525), (75, 2948417), (131, 1688025), (213, 1038175), (317, 697575), (355, 622905), (393, 562675), (655, 337605), (951, 232525), (1065, 207635), (1585, 139515), (1775, 124581), (1965, 112535), (3275, 67521), (4755, 46505), (5325, 41527), (7925, 27903), (9301, 23775), (9825, 22507)]