20239999820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{459791}}^1$

素因数の和:459902

約数の個数: 48

約数和(自身を含む): 44493152256

約数和(自身を除く): 24253152436

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 71, 124, 142, 155, 284, 310, 355, 620, 710, 1420, 2201, 4402, 8804, 11005, 22010, 44020, 459791, 919582, 1839164, 2298955, 4597910, 9195820, 14253521, 28507042, 32645161, 57014084, 65290322, 71267605, 130580644, 142535210, 163225805, 285070420, 326451610, 652903220, 1011999991, 2023999982, 4047999964, 5059999955, 10119999910, 20239999820]

約数ペア:

[(1, 20239999820), (2, 10119999910), (4, 5059999955), (5, 4047999964), (10, 2023999982), (20, 1011999991), (31, 652903220), (62, 326451610), (71, 285070420), (124, 163225805), (142, 142535210), (155, 130580644), (284, 71267605), (310, 65290322), (355, 57014084), (620, 32645161), (710, 28507042), (1420, 14253521), (2201, 9195820), (4402, 4597910), (8804, 2298955), (11005, 1839164), (22010, 919582), (44020, 459791)]