19215980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4733}}^1$

素因数の和:4778

約数の個数: 48

約数和(自身を含む): 47718720

約数和(自身を除く): 28502740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 4733, 9466, 18932, 23665, 33131, 47330, 66262, 94660, 132524, 137257, 165655, 274514, 331310, 549028, 662620, 686285, 960799, 1372570, 1921598, 2745140, 3843196, 4803995, 9607990, 19215980]

約数ペア:

[(1, 19215980), (2, 9607990), (4, 4803995), (5, 3843196), (7, 2745140), (10, 1921598), (14, 1372570), (20, 960799), (28, 686285), (29, 662620), (35, 549028), (58, 331310), (70, 274514), (116, 165655), (140, 137257), (145, 132524), (203, 94660), (290, 66262), (406, 47330), (580, 33131), (812, 23665), (1015, 18932), (2030, 9466), (4060, 4733)]