81443120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4871}}^1$

素因数の和:4914

約数の個数: 80

約数和(自身を含む): 217486080

約数和(自身を除く): 136042960

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 152, 176, 190, 209, 220, 304, 380, 418, 440, 760, 836, 880, 1045, 1520, 1672, 2090, 3344, 4180, 4871, 8360, 9742, 16720, 19484, 24355, 38968, 48710, 53581, 77936, 92549, 97420, 107162, 185098, 194840, 214324, 267905, 370196, 389680, 428648, 462745, 535810, 740392, 857296, 925490, 1018039, 1071620, 1480784, 1850980, 2036078, 2143240, 3701960, 4072156, 4286480, 5090195, 7403920, 8144312, 10180390, 16288624, 20360780, 40721560, 81443120]

約数ペア:

[(1, 81443120), (2, 40721560), (4, 20360780), (5, 16288624), (8, 10180390), (10, 8144312), (11, 7403920), (16, 5090195), (19, 4286480), (20, 4072156), (22, 3701960), (38, 2143240), (40, 2036078), (44, 1850980), (55, 1480784), (76, 1071620), (80, 1018039), (88, 925490), (95, 857296), (110, 740392), (152, 535810), (176, 462745), (190, 428648), (209, 389680), (220, 370196), (304, 267905), (380, 214324), (418, 194840), (440, 185098), (760, 107162), (836, 97420), (880, 92549), (1045, 77936), (1520, 53581), (1672, 48710), (2090, 38968), (3344, 24355), (4180, 19484), (4871, 16720), (8360, 9742)]