About the Number

12801240

12801239 ← → 12801241

2進数表記:110000110101010011011000

漢数字表記:千二百八十万千二百四十

素因数分解:

2 3 × 3 6 × 5 1 × 439 1

素因数の和:468
約数の個数: 112
約数和(自身を含む): 43282800
約数和(自身を除く): 30481560

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 243, 270, 324, 360, 405, 439, 486, 540, 648, 729, 810, 878, 972, 1080, 1215, 1317, 1458, 1620, 1756, 1944, 2195, 2430, 2634, 2916, 3240, 3512, 3645, 3951, 4390, 4860, 5268, 5832, 6585, 7290, 7902, 8780, 9720, 10536, 11853, 13170, 14580, 15804, 17560, 19755, 23706, 26340, 29160, 31608, 35559, 39510, 47412, 52680, 59265, 71118, 79020, 94824, 106677, 118530, 142236, 158040, 177795, 213354, 237060, 284472, 320031, 355590, 426708, 474120, 533385, 640062, 711180, 853416, 1066770, 1280124, 1422360, 1600155, 2133540, 2560248, 3200310, 4267080, 6400620, 12801240]

約数ペア:
[(1, 12801240), (2, 6400620), (3, 4267080), (4, 3200310), (5, 2560248), (6, 2133540), (8, 1600155), (9, 1422360), (10, 1280124), (12, 1066770), (15, 853416), (18, 711180), (20, 640062), (24, 533385), (27, 474120), (30, 426708), (36, 355590), (40, 320031), (45, 284472), (54, 237060), (60, 213354), (72, 177795), (81, 158040), (90, 142236), (108, 118530), (120, 106677), (135, 94824), (162, 79020), (180, 71118), (216, 59265), (243, 52680), (270, 47412), (324, 39510), (360, 35559), (405, 31608), (439, 29160), (486, 26340), (540, 23706), (648, 19755), (729, 17560), (810, 15804), (878, 14580), (972, 13170), (1080, 11853), (1215, 10536), (1317, 9720), (1458, 8780), (1620, 7902), (1756, 7290), (1944, 6585), (2195, 5832), (2430, 5268), (2634, 4860), (2916, 4390), (3240, 3951), (3512, 3645)]

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