81151320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{15727}}^1$

素因数の和:15784

約数の個数: 64

約数和(自身を含む): 249131520

約数和(自身を除く): 167980200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 5160, 15727, 31454, 47181, 62908, 78635, 94362, 125816, 157270, 188724, 235905, 314540, 377448, 471810, 629080, 676261, 943620, 1352522, 1887240, 2028783, 2705044, 3381305, 4057566, 5410088, 6762610, 8115132, 10143915, 13525220, 16230264, 20287830, 27050440, 40575660, 81151320]

約数ペア:

[(1, 81151320), (2, 40575660), (3, 27050440), (4, 20287830), (5, 16230264), (6, 13525220), (8, 10143915), (10, 8115132), (12, 6762610), (15, 5410088), (20, 4057566), (24, 3381305), (30, 2705044), (40, 2028783), (43, 1887240), (60, 1352522), (86, 943620), (120, 676261), (129, 629080), (172, 471810), (215, 377448), (258, 314540), (344, 235905), (430, 188724), (516, 157270), (645, 125816), (860, 94362), (1032, 78635), (1290, 62908), (1720, 47181), (2580, 31454), (5160, 15727)]