28213240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1733}}^1$

素因数の和:1792

約数の個数: 64

約数和(自身を含む): 71163360

約数和(自身を除く): 42950120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 37, 40, 44, 55, 74, 88, 110, 148, 185, 220, 296, 370, 407, 440, 740, 814, 1480, 1628, 1733, 2035, 3256, 3466, 4070, 6932, 8140, 8665, 13864, 16280, 17330, 19063, 34660, 38126, 64121, 69320, 76252, 95315, 128242, 152504, 190630, 256484, 320605, 381260, 512968, 641210, 705331, 762520, 1282420, 1410662, 2564840, 2821324, 3526655, 5642648, 7053310, 14106620, 28213240]

約数ペア:

[(1, 28213240), (2, 14106620), (4, 7053310), (5, 5642648), (8, 3526655), (10, 2821324), (11, 2564840), (20, 1410662), (22, 1282420), (37, 762520), (40, 705331), (44, 641210), (55, 512968), (74, 381260), (88, 320605), (110, 256484), (148, 190630), (185, 152504), (220, 128242), (296, 95315), (370, 76252), (407, 69320), (440, 64121), (740, 38126), (814, 34660), (1480, 19063), (1628, 17330), (1733, 16280), (2035, 13864), (3256, 8665), (3466, 8140), (4070, 6932)]