20422740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26183}}^1$

素因数の和:26208

約数の個数: 48

約数和(自身を含む): 61584768

約数和(自身を除く): 41162028

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, 26183, 52366, 78549, 104732, 130915, 157098, 261830, 314196, 340379, 392745, 523660, 680758, 785490, 1021137, 1361516, 1570980, 1701895, 2042274, 3403790, 4084548, 5105685, 6807580, 10211370, 20422740]

約数ペア:

[(1, 20422740), (2, 10211370), (3, 6807580), (4, 5105685), (5, 4084548), (6, 3403790), (10, 2042274), (12, 1701895), (13, 1570980), (15, 1361516), (20, 1021137), (26, 785490), (30, 680758), (39, 523660), (52, 392745), (60, 340379), (65, 314196), (78, 261830), (130, 157098), (156, 130915), (195, 104732), (260, 78549), (390, 52366), (780, 26183)]