218886580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{151}}^1\times {\mathrm{599}}^1$

素因数の和:781

約数の個数: 72

約数和(自身を含む): 509443200

約数和(自身を除く): 290556620

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 151, 220, 242, 302, 484, 599, 604, 605, 755, 1198, 1210, 1510, 1661, 2396, 2420, 2995, 3020, 3322, 5990, 6589, 6644, 8305, 11980, 13178, 16610, 18271, 26356, 32945, 33220, 36542, 65890, 72479, 73084, 90449, 91355, 131780, 144958, 180898, 182710, 289916, 361796, 362395, 365420, 452245, 724790, 904490, 994939, 1449580, 1808980, 1989878, 3979756, 4974695, 9949390, 10944329, 19898780, 21888658, 43777316, 54721645, 109443290, 218886580]

約数ペア:

[(1, 218886580), (2, 109443290), (4, 54721645), (5, 43777316), (10, 21888658), (11, 19898780), (20, 10944329), (22, 9949390), (44, 4974695), (55, 3979756), (110, 1989878), (121, 1808980), (151, 1449580), (220, 994939), (242, 904490), (302, 724790), (484, 452245), (599, 365420), (604, 362395), (605, 361796), (755, 289916), (1198, 182710), (1210, 180898), (1510, 144958), (1661, 131780), (2396, 91355), (2420, 90449), (2995, 73084), (3020, 72479), (3322, 65890), (5990, 36542), (6589, 33220), (6644, 32945), (8305, 26356), (11980, 18271), (13178, 16610)]