81928260

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{491}}^1$

素因数の和:615

約数の個数: 120

約数和(自身を含む): 260035776

約数和(自身を除く): 178107516

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 103, 108, 135, 162, 180, 206, 270, 309, 324, 405, 412, 491, 515, 540, 618, 810, 927, 982, 1030, 1236, 1473, 1545, 1620, 1854, 1964, 2060, 2455, 2781, 2946, 3090, 3708, 4419, 4635, 4910, 5562, 5892, 6180, 7365, 8343, 8838, 9270, 9820, 11124, 13257, 13905, 14730, 16686, 17676, 18540, 22095, 26514, 27810, 29460, 33372, 39771, 41715, 44190, 50573, 53028, 55620, 66285, 79542, 83430, 88380, 101146, 132570, 151719, 159084, 166860, 198855, 202292, 252865, 265140, 303438, 397710, 455157, 505730, 606876, 758595, 795420, 910314, 1011460, 1365471, 1517190, 1820628, 2275785, 2730942, 3034380, 4096413, 4551570, 5461884, 6827355, 8192826, 9103140, 13654710, 16385652, 20482065, 27309420, 40964130, 81928260]

約数ペア:

[(1, 81928260), (2, 40964130), (3, 27309420), (4, 20482065), (5, 16385652), (6, 13654710), (9, 9103140), (10, 8192826), (12, 6827355), (15, 5461884), (18, 4551570), (20, 4096413), (27, 3034380), (30, 2730942), (36, 2275785), (45, 1820628), (54, 1517190), (60, 1365471), (81, 1011460), (90, 910314), (103, 795420), (108, 758595), (135, 606876), (162, 505730), (180, 455157), (206, 397710), (270, 303438), (309, 265140), (324, 252865), (405, 202292), (412, 198855), (491, 166860), (515, 159084), (540, 151719), (618, 132570), (810, 101146), (927, 88380), (982, 83430), (1030, 79542), (1236, 66285), (1473, 55620), (1545, 53028), (1620, 50573), (1854, 44190), (1964, 41715), (2060, 39771), (2455, 33372), (2781, 29460), (2946, 27810), (3090, 26514), (3708, 22095), (4419, 18540), (4635, 17676), (4910, 16686), (5562, 14730), (5892, 13905), (6180, 13257), (7365, 11124), (8343, 9820), (8838, 9270)]