20857100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{283}}^1$

素因数の和:375

約数の個数: 72

約数和(自身を含む): 50288448

約数和(自身を除く): 29431348

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 67, 100, 110, 134, 220, 268, 275, 283, 335, 550, 566, 670, 737, 1100, 1132, 1340, 1415, 1474, 1675, 2830, 2948, 3113, 3350, 3685, 5660, 6226, 6700, 7075, 7370, 12452, 14150, 14740, 15565, 18425, 18961, 28300, 31130, 36850, 37922, 62260, 73700, 75844, 77825, 94805, 155650, 189610, 208571, 311300, 379220, 417142, 474025, 834284, 948050, 1042855, 1896100, 2085710, 4171420, 5214275, 10428550, 20857100]

約数ペア:

[(1, 20857100), (2, 10428550), (4, 5214275), (5, 4171420), (10, 2085710), (11, 1896100), (20, 1042855), (22, 948050), (25, 834284), (44, 474025), (50, 417142), (55, 379220), (67, 311300), (100, 208571), (110, 189610), (134, 155650), (220, 94805), (268, 77825), (275, 75844), (283, 73700), (335, 62260), (550, 37922), (566, 36850), (670, 31130), (737, 28300), (1100, 18961), (1132, 18425), (1340, 15565), (1415, 14740), (1474, 14150), (1675, 12452), (2830, 7370), (2948, 7075), (3113, 6700), (3350, 6226), (3685, 5660)]