21791450

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{827}}^1$

素因数の和:887

約数の個数: 48

約数和(自身を含む): 44354304

約数和(自身を除く): 22562854

約数列:

[1, 2, 5, 10, 17, 25, 31, 34, 50, 62, 85, 155, 170, 310, 425, 527, 775, 827, 850, 1054, 1550, 1654, 2635, 4135, 5270, 8270, 13175, 14059, 20675, 25637, 26350, 28118, 41350, 51274, 70295, 128185, 140590, 256370, 351475, 435829, 640925, 702950, 871658, 1281850, 2179145, 4358290, 10895725, 21791450]

約数ペア:

[(1, 21791450), (2, 10895725), (5, 4358290), (10, 2179145), (17, 1281850), (25, 871658), (31, 702950), (34, 640925), (50, 435829), (62, 351475), (85, 256370), (155, 140590), (170, 128185), (310, 70295), (425, 51274), (527, 41350), (775, 28118), (827, 26350), (850, 25637), (1054, 20675), (1550, 14059), (1654, 13175), (2635, 8270), (4135, 5270)]