81261840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{30781}}^1$

素因数の和:30808

約数の個数: 80

約数和(自身を含む): 274821696

約数和(自身を除く): 193559856

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320, 2640, 30781, 61562, 92343, 123124, 153905, 184686, 246248, 307810, 338591, 369372, 461715, 492496, 615620, 677182, 738744, 923430, 1015773, 1231240, 1354364, 1477488, 1692955, 1846860, 2031546, 2462480, 2708728, 3385910, 3693720, 4063092, 5078865, 5417456, 6771820, 7387440, 8126184, 10157730, 13543640, 16252368, 20315460, 27087280, 40630920, 81261840]

約数ペア:

[(1, 81261840), (2, 40630920), (3, 27087280), (4, 20315460), (5, 16252368), (6, 13543640), (8, 10157730), (10, 8126184), (11, 7387440), (12, 6771820), (15, 5417456), (16, 5078865), (20, 4063092), (22, 3693720), (24, 3385910), (30, 2708728), (33, 2462480), (40, 2031546), (44, 1846860), (48, 1692955), (55, 1477488), (60, 1354364), (66, 1231240), (80, 1015773), (88, 923430), (110, 738744), (120, 677182), (132, 615620), (165, 492496), (176, 461715), (220, 369372), (240, 338591), (264, 307810), (330, 246248), (440, 184686), (528, 153905), (660, 123124), (880, 92343), (1320, 61562), (2640, 30781)]