20904780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26801}}^1$

素因数の和:26826

約数の個数: 48

約数和(自身を含む): 63038304

約数和(自身を除く): 42133524

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26801, 53602, 80403, 107204, 134005, 160806, 268010, 321612, 348413, 402015, 536020, 696826, 804030, 1045239, 1393652, 1608060, 1742065, 2090478, 3484130, 4180956, 5226195, 6968260, 10452390, 20904780]

約数ペア:

[(1, 20904780), (2, 10452390), (3, 6968260), (4, 5226195), (5, 4180956), (6, 3484130), (10, 2090478), (12, 1742065), (13, 1608060), (15, 1393652), (20, 1045239), (26, 804030), (30, 696826), (39, 536020), (52, 402015), (60, 348413), (65, 321612), (78, 268010), (130, 160806), (156, 134005), (195, 107204), (260, 80403), (390, 53602), (780, 26801)]