18202725

素因数分解:

$3^4\times 5^2\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:212

約数の個数: 60

約数和(自身を含む): 34434180

約数和(自身を除く): 16231455

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 89, 101, 135, 225, 267, 303, 405, 445, 505, 675, 801, 909, 1335, 1515, 2025, 2225, 2403, 2525, 2727, 4005, 4545, 6675, 7209, 7575, 8181, 8989, 12015, 13635, 20025, 22725, 26967, 36045, 40905, 44945, 60075, 68175, 80901, 134835, 180225, 204525, 224725, 242703, 404505, 674175, 728109, 1213515, 2022525, 3640545, 6067575, 18202725]

約数ペア:

[(1, 18202725), (3, 6067575), (5, 3640545), (9, 2022525), (15, 1213515), (25, 728109), (27, 674175), (45, 404505), (75, 242703), (81, 224725), (89, 204525), (101, 180225), (135, 134835), (225, 80901), (267, 68175), (303, 60075), (405, 44945), (445, 40905), (505, 36045), (675, 26967), (801, 22725), (909, 20025), (1335, 13635), (1515, 12015), (2025, 8989), (2225, 8181), (2403, 7575), (2525, 7209), (2727, 6675), (4005, 4545)]