About the Number

12721020

12721019 ← → 12721021

2進数表記:110000100001101101111100

漢数字表記:千二百七十二万千二十

素因数分解:

2 2 × 3 1 × 5 1 × 13 1 × 47 1 × 347 1

素因数の和:419
約数の個数: 96
約数和(自身を含む): 39287808
約数和(自身を除く): 26566788

約数列:
[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 47, 52, 60, 65, 78, 94, 130, 141, 156, 188, 195, 235, 260, 282, 347, 390, 470, 564, 611, 694, 705, 780, 940, 1041, 1222, 1388, 1410, 1735, 1833, 2082, 2444, 2820, 3055, 3470, 3666, 4164, 4511, 5205, 6110, 6940, 7332, 9022, 9165, 10410, 12220, 13533, 16309, 18044, 18330, 20820, 22555, 27066, 32618, 36660, 45110, 48927, 54132, 65236, 67665, 81545, 90220, 97854, 135330, 163090, 195708, 212017, 244635, 270660, 326180, 424034, 489270, 636051, 848068, 978540, 1060085, 1272102, 2120170, 2544204, 3180255, 4240340, 6360510, 12721020]

約数ペア:
[(1, 12721020), (2, 6360510), (3, 4240340), (4, 3180255), (5, 2544204), (6, 2120170), (10, 1272102), (12, 1060085), (13, 978540), (15, 848068), (20, 636051), (26, 489270), (30, 424034), (39, 326180), (47, 270660), (52, 244635), (60, 212017), (65, 195708), (78, 163090), (94, 135330), (130, 97854), (141, 90220), (156, 81545), (188, 67665), (195, 65236), (235, 54132), (260, 48927), (282, 45110), (347, 36660), (390, 32618), (470, 27066), (564, 22555), (611, 20820), (694, 18330), (705, 18044), (780, 16309), (940, 13533), (1041, 12220), (1222, 10410), (1388, 9165), (1410, 9022), (1735, 7332), (1833, 6940), (2082, 6110), (2444, 5205), (2820, 4511), (3055, 4164), (3470, 3666)]

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