About the Number

81420900

81420899 ← → 81420901

2進数表記:100110110100110001001100100

漢数字表記:八千百四十二万九百

素因数分解:

2 2 × 3 1 × 5 2 × 11 2 × 2243 1

素因数の和:2282
約数の個数: 108
約数和(自身を含む): 259056336
約数和(自身を除く): 177635436

約数列:
[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 25, 30, 33, 44, 50, 55, 60, 66, 75, 100, 110, 121, 132, 150, 165, 220, 242, 275, 300, 330, 363, 484, 550, 605, 660, 726, 825, 1100, 1210, 1452, 1650, 1815, 2243, 2420, 3025, 3300, 3630, 4486, 6050, 6729, 7260, 8972, 9075, 11215, 12100, 13458, 18150, 22430, 24673, 26916, 33645, 36300, 44860, 49346, 56075, 67290, 74019, 98692, 112150, 123365, 134580, 148038, 168225, 224300, 246730, 271403, 296076, 336450, 370095, 493460, 542806, 616825, 672900, 740190, 814209, 1085612, 1233650, 1357015, 1480380, 1628418, 1850475, 2467300, 2714030, 3256836, 3700950, 4071045, 5428060, 6785075, 7401900, 8142090, 13570150, 16284180, 20355225, 27140300, 40710450, 81420900]

約数ペア:
[(1, 81420900), (2, 40710450), (3, 27140300), (4, 20355225), (5, 16284180), (6, 13570150), (10, 8142090), (11, 7401900), (12, 6785075), (15, 5428060), (20, 4071045), (22, 3700950), (25, 3256836), (30, 2714030), (33, 2467300), (44, 1850475), (50, 1628418), (55, 1480380), (60, 1357015), (66, 1233650), (75, 1085612), (100, 814209), (110, 740190), (121, 672900), (132, 616825), (150, 542806), (165, 493460), (220, 370095), (242, 336450), (275, 296076), (300, 271403), (330, 246730), (363, 224300), (484, 168225), (550, 148038), (605, 134580), (660, 123365), (726, 112150), (825, 98692), (1100, 74019), (1210, 67290), (1452, 56075), (1650, 49346), (1815, 44860), (2243, 36300), (2420, 33645), (3025, 26916), (3300, 24673), (3630, 22430), (4486, 18150), (6050, 13458), (6729, 12100), (7260, 11215), (8972, 9075)]

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