28868180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{151}}^1$

素因数の和:261

約数の個数: 72

約数和(自身を含む): 67925760

約数和(自身を除く): 39057580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 121, 151, 158, 220, 242, 302, 316, 395, 484, 604, 605, 755, 790, 869, 1210, 1510, 1580, 1661, 1738, 2420, 3020, 3322, 3476, 4345, 6644, 8305, 8690, 9559, 11929, 16610, 17380, 18271, 19118, 23858, 33220, 36542, 38236, 47716, 47795, 59645, 73084, 91355, 95590, 119290, 131219, 182710, 191180, 238580, 262438, 365420, 524876, 656095, 1312190, 1443409, 2624380, 2886818, 5773636, 7217045, 14434090, 28868180]

約数ペア:

[(1, 28868180), (2, 14434090), (4, 7217045), (5, 5773636), (10, 2886818), (11, 2624380), (20, 1443409), (22, 1312190), (44, 656095), (55, 524876), (79, 365420), (110, 262438), (121, 238580), (151, 191180), (158, 182710), (220, 131219), (242, 119290), (302, 95590), (316, 91355), (395, 73084), (484, 59645), (604, 47795), (605, 47716), (755, 38236), (790, 36542), (869, 33220), (1210, 23858), (1510, 19118), (1580, 18271), (1661, 17380), (1738, 16610), (2420, 11929), (3020, 9559), (3322, 8690), (3476, 8305), (4345, 6644)]