28908225

素因数分解:

$3^3\times 5^2\times {\mathrm{113}}^1\times {\mathrm{379}}^1$

素因数の和:511

約数の個数: 48

約数和(自身を含む): 53716800

約数和(自身を除く): 24808575

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 113, 135, 225, 339, 379, 565, 675, 1017, 1137, 1695, 1895, 2825, 3051, 3411, 5085, 5685, 8475, 9475, 10233, 15255, 17055, 25425, 28425, 42827, 51165, 76275, 85275, 128481, 214135, 255825, 385443, 642405, 1070675, 1156329, 1927215, 3212025, 5781645, 9636075, 28908225]

約数ペア:

[(1, 28908225), (3, 9636075), (5, 5781645), (9, 3212025), (15, 1927215), (25, 1156329), (27, 1070675), (45, 642405), (75, 385443), (113, 255825), (135, 214135), (225, 128481), (339, 85275), (379, 76275), (565, 51165), (675, 42827), (1017, 28425), (1137, 25425), (1695, 17055), (1895, 15255), (2825, 10233), (3051, 9475), (3411, 8475), (5085, 5685)]