About the Number

128684640

128684639 ← → 128684641

2進数表記:111101010111001001001100000

漢数字表記:一億二千八百六十八万四千六百四十

素因数分解:

2 5 × 3 1 × 5 1 × 7 1 × 38299 1

素因数の和:38324
約数の個数: 96
約数和(自身を含む): 463276800
約数和(自身を除く): 334592160

約数列:
[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 70, 80, 84, 96, 105, 112, 120, 140, 160, 168, 210, 224, 240, 280, 336, 420, 480, 560, 672, 840, 1120, 1680, 3360, 38299, 76598, 114897, 153196, 191495, 229794, 268093, 306392, 382990, 459588, 536186, 574485, 612784, 765980, 804279, 919176, 1072372, 1148970, 1225568, 1340465, 1531960, 1608558, 1838352, 2144744, 2297940, 2680930, 3063920, 3217116, 3676704, 4021395, 4289488, 4595880, 5361860, 6127840, 6434232, 8042790, 8578976, 9191760, 10723720, 12868464, 16085580, 18383520, 21447440, 25736928, 32171160, 42894880, 64342320, 128684640]

約数ペア:
[(1, 128684640), (2, 64342320), (3, 42894880), (4, 32171160), (5, 25736928), (6, 21447440), (7, 18383520), (8, 16085580), (10, 12868464), (12, 10723720), (14, 9191760), (15, 8578976), (16, 8042790), (20, 6434232), (21, 6127840), (24, 5361860), (28, 4595880), (30, 4289488), (32, 4021395), (35, 3676704), (40, 3217116), (42, 3063920), (48, 2680930), (56, 2297940), (60, 2144744), (70, 1838352), (80, 1608558), (84, 1531960), (96, 1340465), (105, 1225568), (112, 1148970), (120, 1072372), (140, 919176), (160, 804279), (168, 765980), (210, 612784), (224, 574485), (240, 536186), (280, 459588), (336, 382990), (420, 306392), (480, 268093), (560, 229794), (672, 191495), (840, 153196), (1120, 114897), (1680, 76598), (3360, 38299)]

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