20795580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8887}}^1$

素因数の和:8915

約数の個数: 72

約数和(自身を含む): 67939872

約数和(自身を除く): 47144292

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 8887, 17774, 26661, 35548, 44435, 53322, 79983, 88870, 106644, 115531, 133305, 159966, 177740, 231062, 266610, 319932, 346593, 399915, 462124, 533220, 577655, 693186, 799830, 1039779, 1155310, 1386372, 1599660, 1732965, 2079558, 2310620, 3465930, 4159116, 5198895, 6931860, 10397790, 20795580]

約数ペア:

[(1, 20795580), (2, 10397790), (3, 6931860), (4, 5198895), (5, 4159116), (6, 3465930), (9, 2310620), (10, 2079558), (12, 1732965), (13, 1599660), (15, 1386372), (18, 1155310), (20, 1039779), (26, 799830), (30, 693186), (36, 577655), (39, 533220), (45, 462124), (52, 399915), (60, 346593), (65, 319932), (78, 266610), (90, 231062), (117, 177740), (130, 159966), (156, 133305), (180, 115531), (195, 106644), (234, 88870), (260, 79983), (390, 53322), (468, 44435), (585, 35548), (780, 26661), (1170, 17774), (2340, 8887)]