28889680

素因数分解:

$2^4\times 5^1\times {\mathrm{331}}^1\times {\mathrm{1091}}^1$

素因数の和:1435

約数の個数: 40

約数和(自身を含む): 67433184

約数和(自身を除く): 38543504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 331, 662, 1091, 1324, 1655, 2182, 2648, 3310, 4364, 5296, 5455, 6620, 8728, 10910, 13240, 17456, 21820, 26480, 43640, 87280, 361121, 722242, 1444484, 1805605, 2888968, 3611210, 5777936, 7222420, 14444840, 28889680]

約数ペア:

[(1, 28889680), (2, 14444840), (4, 7222420), (5, 5777936), (8, 3611210), (10, 2888968), (16, 1805605), (20, 1444484), (40, 722242), (80, 361121), (331, 87280), (662, 43640), (1091, 26480), (1324, 21820), (1655, 17456), (2182, 13240), (2648, 10910), (3310, 8728), (4364, 6620), (5296, 5455)]