20595075

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{557}}^1$

素因数の和:616

約数の個数: 48

約数和(自身を含む): 37363680

約数和(自身を除く): 16768605

約数列:

[1, 3, 5, 15, 17, 25, 29, 51, 75, 85, 87, 145, 255, 425, 435, 493, 557, 725, 1275, 1479, 1671, 2175, 2465, 2785, 7395, 8355, 9469, 12325, 13925, 16153, 28407, 36975, 41775, 47345, 48459, 80765, 142035, 236725, 242295, 274601, 403825, 710175, 823803, 1211475, 1373005, 4119015, 6865025, 20595075]

約数ペア:

[(1, 20595075), (3, 6865025), (5, 4119015), (15, 1373005), (17, 1211475), (25, 823803), (29, 710175), (51, 403825), (75, 274601), (85, 242295), (87, 236725), (145, 142035), (255, 80765), (425, 48459), (435, 47345), (493, 41775), (557, 36975), (725, 28407), (1275, 16153), (1479, 13925), (1671, 12325), (2175, 9469), (2465, 8355), (2785, 7395)]