87217880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{1901}}^1$

素因数の和:1980

約数の個数: 64

約数和(自身を含む): 208154880

約数和(自身を除く): 120937000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 37, 40, 62, 74, 124, 148, 155, 185, 248, 296, 310, 370, 620, 740, 1147, 1240, 1480, 1901, 2294, 3802, 4588, 5735, 7604, 9176, 9505, 11470, 15208, 19010, 22940, 38020, 45880, 58931, 70337, 76040, 117862, 140674, 235724, 281348, 294655, 351685, 471448, 562696, 589310, 703370, 1178620, 1406740, 2180447, 2357240, 2813480, 4360894, 8721788, 10902235, 17443576, 21804470, 43608940, 87217880]

約数ペア:

[(1, 87217880), (2, 43608940), (4, 21804470), (5, 17443576), (8, 10902235), (10, 8721788), (20, 4360894), (31, 2813480), (37, 2357240), (40, 2180447), (62, 1406740), (74, 1178620), (124, 703370), (148, 589310), (155, 562696), (185, 471448), (248, 351685), (296, 294655), (310, 281348), (370, 235724), (620, 140674), (740, 117862), (1147, 76040), (1240, 70337), (1480, 58931), (1901, 45880), (2294, 38020), (3802, 22940), (4588, 19010), (5735, 15208), (7604, 11470), (9176, 9505)]