21008889700

素因数分解:

$2^2\times 5^2\times {\mathrm{311}}^1\times {\mathrm{317}}^1\times {\mathrm{2131}}^1$

素因数の和:2773

約数の個数: 72

約数和(自身を含む): 45901687104

約数和(自身を除く): 24892797404

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 311, 317, 622, 634, 1244, 1268, 1555, 1585, 2131, 3110, 3170, 4262, 6220, 6340, 7775, 7925, 8524, 10655, 15550, 15850, 21310, 31100, 31700, 42620, 53275, 98587, 106550, 197174, 213100, 394348, 492935, 662741, 675527, 985870, 1325482, 1351054, 1971740, 2464675, 2650964, 2702108, 3313705, 3377635, 4929350, 6627410, 6755270, 9858700, 13254820, 13510540, 16568525, 16888175, 33137050, 33776350, 66274100, 67552700, 210088897, 420177794, 840355588, 1050444485, 2100888970, 4201777940, 5252222425, 10504444850, 21008889700]

約数ペア:

[(1, 21008889700), (2, 10504444850), (4, 5252222425), (5, 4201777940), (10, 2100888970), (20, 1050444485), (25, 840355588), (50, 420177794), (100, 210088897), (311, 67552700), (317, 66274100), (622, 33776350), (634, 33137050), (1244, 16888175), (1268, 16568525), (1555, 13510540), (1585, 13254820), (2131, 9858700), (3110, 6755270), (3170, 6627410), (4262, 4929350), (6220, 3377635), (6340, 3313705), (7775, 2702108), (7925, 2650964), (8524, 2464675), (10655, 1971740), (15550, 1351054), (15850, 1325482), (21310, 985870), (31100, 675527), (31700, 662741), (42620, 492935), (53275, 394348), (98587, 213100), (106550, 197174)]