About the Number

78420290

78420289 ← → 78420291

2進数表記:100101011001001100101000010

漢数字表記:七千八百四十二万二百九十

素因数分解:

2 1 × 5 1 × 13 1 × 41 1 × 14713 1

素因数の和:14774
約数の個数: 32
約数和(自身を含む): 155732976
約数和(自身を除く): 77312686

約数列:
[1, 2, 5, 10, 13, 26, 41, 65, 82, 130, 205, 410, 533, 1066, 2665, 5330, 14713, 29426, 73565, 147130, 191269, 382538, 603233, 956345, 1206466, 1912690, 3016165, 6032330, 7842029, 15684058, 39210145, 78420290]

約数ペア:
[(1, 78420290), (2, 39210145), (5, 15684058), (10, 7842029), (13, 6032330), (26, 3016165), (41, 1912690), (65, 1206466), (82, 956345), (130, 603233), (205, 382538), (410, 191269), (533, 147130), (1066, 73565), (2665, 29426), (5330, 14713)]

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