81550920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61781}}^1$

素因数の和:61806

約数の個数: 64

約数和(自身を含む): 266898240

約数和(自身を除く): 185347320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 264, 330, 440, 660, 1320, 61781, 123562, 185343, 247124, 308905, 370686, 494248, 617810, 679591, 741372, 926715, 1235620, 1359182, 1482744, 1853430, 2038773, 2471240, 2718364, 3397955, 3706860, 4077546, 5436728, 6795910, 7413720, 8155092, 10193865, 13591820, 16310184, 20387730, 27183640, 40775460, 81550920]

約数ペア:

[(1, 81550920), (2, 40775460), (3, 27183640), (4, 20387730), (5, 16310184), (6, 13591820), (8, 10193865), (10, 8155092), (11, 7413720), (12, 6795910), (15, 5436728), (20, 4077546), (22, 3706860), (24, 3397955), (30, 2718364), (33, 2471240), (40, 2038773), (44, 1853430), (55, 1482744), (60, 1359182), (66, 1235620), (88, 926715), (110, 741372), (120, 679591), (132, 617810), (165, 494248), (220, 370686), (264, 308905), (330, 247124), (440, 185343), (660, 123562), (1320, 61781)]