28749225

素因数分解:

$3^1\times 5^2\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 49550400

約数和(自身を除く): 20801175

約数列:

[1, 3, 5, 15, 25, 59, 73, 75, 89, 177, 219, 267, 295, 365, 445, 885, 1095, 1335, 1475, 1825, 2225, 4307, 4425, 5251, 5475, 6497, 6675, 12921, 15753, 19491, 21535, 26255, 32485, 64605, 78765, 97455, 107675, 131275, 162425, 323025, 383323, 393825, 487275, 1149969, 1916615, 5749845, 9583075, 28749225]

約数ペア:

[(1, 28749225), (3, 9583075), (5, 5749845), (15, 1916615), (25, 1149969), (59, 487275), (73, 393825), (75, 383323), (89, 323025), (177, 162425), (219, 131275), (267, 107675), (295, 97455), (365, 78765), (445, 64605), (885, 32485), (1095, 26255), (1335, 21535), (1475, 19491), (1825, 15753), (2225, 12921), (4307, 6675), (4425, 6497), (5251, 5475)]