1856161940

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{331}}^1\times {\mathrm{1091}}^1$

素因数の和:1688

約数の個数: 48

約数和(自身を含む): 3928526784

約数和(自身を除く): 2072364844

約数列:

[1, 2, 4, 5, 10, 20, 257, 331, 514, 662, 1028, 1091, 1285, 1324, 1655, 2182, 2570, 3310, 4364, 5140, 5455, 6620, 10910, 21820, 85067, 170134, 280387, 340268, 361121, 425335, 560774, 722242, 850670, 1121548, 1401935, 1444484, 1701340, 1805605, 2803870, 3611210, 5607740, 7222420, 92808097, 185616194, 371232388, 464040485, 928080970, 1856161940]

約数ペア:

[(1, 1856161940), (2, 928080970), (4, 464040485), (5, 371232388), (10, 185616194), (20, 92808097), (257, 7222420), (331, 5607740), (514, 3611210), (662, 2803870), (1028, 1805605), (1091, 1701340), (1285, 1444484), (1324, 1401935), (1655, 1121548), (2182, 850670), (2570, 722242), (3310, 560774), (4364, 425335), (5140, 361121), (5455, 340268), (6620, 280387), (10910, 170134), (21820, 85067)]