28779850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:172

約数の個数: 72

約数和(自身を含む): 60558624

約数和(自身を除く): 31778774

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 67, 71, 110, 121, 134, 142, 242, 275, 335, 355, 550, 605, 670, 710, 737, 781, 1210, 1474, 1562, 1675, 1775, 3025, 3350, 3550, 3685, 3905, 4757, 6050, 7370, 7810, 8107, 8591, 9514, 16214, 17182, 18425, 19525, 23785, 36850, 39050, 40535, 42955, 47570, 52327, 81070, 85910, 104654, 118925, 202675, 214775, 237850, 261635, 405350, 429550, 523270, 575597, 1151194, 1308175, 2616350, 2877985, 5755970, 14389925, 28779850]

約数ペア:

[(1, 28779850), (2, 14389925), (5, 5755970), (10, 2877985), (11, 2616350), (22, 1308175), (25, 1151194), (50, 575597), (55, 523270), (67, 429550), (71, 405350), (110, 261635), (121, 237850), (134, 214775), (142, 202675), (242, 118925), (275, 104654), (335, 85910), (355, 81070), (550, 52327), (605, 47570), (670, 42955), (710, 40535), (737, 39050), (781, 36850), (1210, 23785), (1474, 19525), (1562, 18425), (1675, 17182), (1775, 16214), (3025, 9514), (3350, 8591), (3550, 8107), (3685, 7810), (3905, 7370), (4757, 6050)]