20628225

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{5393}}^1$

素因数の和:5426

約数の個数: 36

約数和(自身を含む): 39128076

約数和(自身を除く): 18499851

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 225, 255, 425, 765, 1275, 3825, 5393, 16179, 26965, 48537, 80895, 91681, 134825, 242685, 275043, 404475, 458405, 825129, 1213425, 1375215, 2292025, 4125645, 6876075, 20628225]

約数ペア:

[(1, 20628225), (3, 6876075), (5, 4125645), (9, 2292025), (15, 1375215), (17, 1213425), (25, 825129), (45, 458405), (51, 404475), (75, 275043), (85, 242685), (153, 134825), (225, 91681), (255, 80895), (425, 48537), (765, 26965), (1275, 16179), (3825, 5393)]