About the Number

12855990

12855989 ← → 12855991

2進数表記:110001000010101010110110

漢数字表記:千二百八十五万五千九百九十

素因数分解:

2 1 × 3 1 × 5 1 × 7 1 × 29 1 × 2111 1

素因数の和:2157
約数の個数: 64
約数和(自身を含む): 36495360
約数和(自身を除く): 23639370

約数列:
[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 29, 30, 35, 42, 58, 70, 87, 105, 145, 174, 203, 210, 290, 406, 435, 609, 870, 1015, 1218, 2030, 2111, 3045, 4222, 6090, 6333, 10555, 12666, 14777, 21110, 29554, 31665, 44331, 61219, 63330, 73885, 88662, 122438, 147770, 183657, 221655, 306095, 367314, 428533, 443310, 612190, 857066, 918285, 1285599, 1836570, 2142665, 2571198, 4285330, 6427995, 12855990]

約数ペア:
[(1, 12855990), (2, 6427995), (3, 4285330), (5, 2571198), (6, 2142665), (7, 1836570), (10, 1285599), (14, 918285), (15, 857066), (21, 612190), (29, 443310), (30, 428533), (35, 367314), (42, 306095), (58, 221655), (70, 183657), (87, 147770), (105, 122438), (145, 88662), (174, 73885), (203, 63330), (210, 61219), (290, 44331), (406, 31665), (435, 29554), (609, 21110), (870, 14777), (1015, 12666), (1218, 10555), (2030, 6333), (2111, 6090), (3045, 4222)]

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