28123700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{691}}^1$

素因数の和:753

約数の個数: 72

約数和(自身を含む): 68474784

約数和(自身を除く): 40351084

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 37, 44, 50, 55, 74, 100, 110, 148, 185, 220, 275, 370, 407, 550, 691, 740, 814, 925, 1100, 1382, 1628, 1850, 2035, 2764, 3455, 3700, 4070, 6910, 7601, 8140, 10175, 13820, 15202, 17275, 20350, 25567, 30404, 34550, 38005, 40700, 51134, 69100, 76010, 102268, 127835, 152020, 190025, 255670, 281237, 380050, 511340, 562474, 639175, 760100, 1124948, 1278350, 1406185, 2556700, 2812370, 5624740, 7030925, 14061850, 28123700]

約数ペア:

[(1, 28123700), (2, 14061850), (4, 7030925), (5, 5624740), (10, 2812370), (11, 2556700), (20, 1406185), (22, 1278350), (25, 1124948), (37, 760100), (44, 639175), (50, 562474), (55, 511340), (74, 380050), (100, 281237), (110, 255670), (148, 190025), (185, 152020), (220, 127835), (275, 102268), (370, 76010), (407, 69100), (550, 51134), (691, 40700), (740, 38005), (814, 34550), (925, 30404), (1100, 25567), (1382, 20350), (1628, 17275), (1850, 15202), (2035, 13820), (2764, 10175), (3455, 8140), (3700, 7601), (4070, 6910)]