20158065

素因数分解:

$3^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{353}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 37110528

約数和(自身を除く): 16952463

約数列:

[1, 3, 5, 9, 15, 27, 45, 47, 81, 135, 141, 235, 243, 353, 405, 423, 705, 1059, 1215, 1269, 1765, 2115, 3177, 3807, 5295, 6345, 9531, 11421, 15885, 16591, 19035, 28593, 47655, 49773, 57105, 82955, 85779, 142965, 149319, 248865, 428895, 447957, 746595, 1343871, 2239785, 4031613, 6719355, 20158065]

約数ペア:

[(1, 20158065), (3, 6719355), (5, 4031613), (9, 2239785), (15, 1343871), (27, 746595), (45, 447957), (47, 428895), (81, 248865), (135, 149319), (141, 142965), (235, 85779), (243, 82955), (353, 57105), (405, 49773), (423, 47655), (705, 28593), (1059, 19035), (1215, 16591), (1269, 15885), (1765, 11421), (2115, 9531), (3177, 6345), (3807, 5295)]