19628325

素因数分解:

$3^7\times 5^2\times {\mathrm{359}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 36604800

約数和(自身を除く): 16976475

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 243, 359, 405, 675, 729, 1077, 1215, 1795, 2025, 2187, 3231, 3645, 5385, 6075, 8975, 9693, 10935, 16155, 18225, 26925, 29079, 48465, 54675, 80775, 87237, 145395, 242325, 261711, 436185, 726975, 785133, 1308555, 2180925, 3925665, 6542775, 19628325]

約数ペア:

[(1, 19628325), (3, 6542775), (5, 3925665), (9, 2180925), (15, 1308555), (25, 785133), (27, 726975), (45, 436185), (75, 261711), (81, 242325), (135, 145395), (225, 87237), (243, 80775), (359, 54675), (405, 48465), (675, 29079), (729, 26925), (1077, 18225), (1215, 16155), (1795, 10935), (2025, 9693), (2187, 8975), (3231, 6075), (3645, 5385)]