20813580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{115631}}^1$

素因数の和:115646

約数の個数: 36

約数和(自身を含む): 63135072

約数和(自身を除く): 42321492

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 115631, 231262, 346893, 462524, 578155, 693786, 1040679, 1156310, 1387572, 1734465, 2081358, 2312620, 3468930, 4162716, 5203395, 6937860, 10406790, 20813580]

約数ペア:

[(1, 20813580), (2, 10406790), (3, 6937860), (4, 5203395), (5, 4162716), (6, 3468930), (9, 2312620), (10, 2081358), (12, 1734465), (15, 1387572), (18, 1156310), (20, 1040679), (30, 693786), (36, 578155), (45, 462524), (60, 346893), (90, 231262), (180, 115631)]