20530995

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 34003200

約数和(自身を除く): 13472205

約数列:

[1, 3, 5, 15, 43, 129, 139, 215, 229, 417, 645, 687, 695, 1145, 2085, 3435, 5977, 9847, 17931, 29541, 29885, 31831, 49235, 89655, 95493, 147705, 159155, 477465, 1368733, 4106199, 6843665, 20530995]

約数ペア:

[(1, 20530995), (3, 6843665), (5, 4106199), (15, 1368733), (43, 477465), (129, 159155), (139, 147705), (215, 95493), (229, 89655), (417, 49235), (645, 31831), (687, 29885), (695, 29541), (1145, 17931), (2085, 9847), (3435, 5977)]