81713720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{16883}}^1$

素因数の和:16916

約数の個数: 48

約数和(自身を含む): 202101480

約数和(自身を除く): 120387760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4840, 16883, 33766, 67532, 84415, 135064, 168830, 185713, 337660, 371426, 675320, 742852, 928565, 1485704, 1857130, 2042843, 3714260, 4085686, 7428520, 8171372, 10214215, 16342744, 20428430, 40856860, 81713720]

約数ペア:

[(1, 81713720), (2, 40856860), (4, 20428430), (5, 16342744), (8, 10214215), (10, 8171372), (11, 7428520), (20, 4085686), (22, 3714260), (40, 2042843), (44, 1857130), (55, 1485704), (88, 928565), (110, 742852), (121, 675320), (220, 371426), (242, 337660), (440, 185713), (484, 168830), (605, 135064), (968, 84415), (1210, 67532), (2420, 33766), (4840, 16883)]