402905972

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1\times {\mathrm{521}}^1$

素因数の和:992

約数の個数: 48

約数和(自身を含む): 820834560

約数和(自身を除く): 417928588

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 389, 497, 521, 778, 994, 1042, 1556, 1988, 2084, 2723, 3647, 5446, 7294, 10892, 14588, 27619, 36991, 55238, 73982, 110476, 147964, 193333, 202669, 258937, 386666, 405338, 517874, 773332, 810676, 1035748, 1418683, 2837366, 5674732, 14389499, 28778998, 57557996, 100726493, 201452986, 402905972]

約数ペア:

[(1, 402905972), (2, 201452986), (4, 100726493), (7, 57557996), (14, 28778998), (28, 14389499), (71, 5674732), (142, 2837366), (284, 1418683), (389, 1035748), (497, 810676), (521, 773332), (778, 517874), (994, 405338), (1042, 386666), (1556, 258937), (1988, 202669), (2084, 193333), (2723, 147964), (3647, 110476), (5446, 73982), (7294, 55238), (10892, 36991), (14588, 27619)]