128239380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1451}}^1$

素因数の和:1957

約数の個数: 72

約数和(自身を含む): 390053664

約数和(自身を除く): 261814284

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 491, 982, 1451, 1473, 1964, 2455, 2902, 2946, 4353, 4419, 4910, 5804, 5892, 7255, 7365, 8706, 8838, 9820, 13059, 14510, 14730, 17412, 17676, 21765, 22095, 26118, 29020, 29460, 43530, 44190, 52236, 65295, 87060, 88380, 130590, 261180, 712441, 1424882, 2137323, 2849764, 3562205, 4274646, 6411969, 7124410, 8549292, 10686615, 12823938, 14248820, 21373230, 25647876, 32059845, 42746460, 64119690, 128239380]

約数ペア:

[(1, 128239380), (2, 64119690), (3, 42746460), (4, 32059845), (5, 25647876), (6, 21373230), (9, 14248820), (10, 12823938), (12, 10686615), (15, 8549292), (18, 7124410), (20, 6411969), (30, 4274646), (36, 3562205), (45, 2849764), (60, 2137323), (90, 1424882), (180, 712441), (491, 261180), (982, 130590), (1451, 88380), (1473, 87060), (1964, 65295), (2455, 52236), (2902, 44190), (2946, 43530), (4353, 29460), (4419, 29020), (4910, 26118), (5804, 22095), (5892, 21765), (7255, 17676), (7365, 17412), (8706, 14730), (8838, 14510), (9820, 13059)]