9919980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{7873}}^1$

素因数の和:7895

約数の個数: 72

約数和(自身を含む): 34393632

約数和(自身を除く): 24473652

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 7873, 15746, 23619, 31492, 39365, 47238, 55111, 70857, 78730, 94476, 110222, 118095, 141714, 157460, 165333, 220444, 236190, 275555, 283428, 330666, 354285, 472380, 495999, 551110, 661332, 708570, 826665, 991998, 1102220, 1417140, 1653330, 1983996, 2479995, 3306660, 4959990, 9919980]

約数ペア:

[(1, 9919980), (2, 4959990), (3, 3306660), (4, 2479995), (5, 1983996), (6, 1653330), (7, 1417140), (9, 1102220), (10, 991998), (12, 826665), (14, 708570), (15, 661332), (18, 551110), (20, 495999), (21, 472380), (28, 354285), (30, 330666), (35, 283428), (36, 275555), (42, 236190), (45, 220444), (60, 165333), (63, 157460), (70, 141714), (84, 118095), (90, 110222), (105, 94476), (126, 78730), (140, 70857), (180, 55111), (210, 47238), (252, 39365), (315, 31492), (420, 23619), (630, 15746), (1260, 7873)]