About the Number

18681640

18681639 ← → 18681641

2進数表記:1000111010000111100101000

漢数字表記:千八百六十八万千六百四十

素因数分解:

2 3 × 5 1 × 17 1 × 83 1 × 331 1

素因数の和:442
約数の個数: 64
約数和(自身を含む): 45178560
約数和(自身を除く): 26496920

約数列:
[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 83, 85, 136, 166, 170, 331, 332, 340, 415, 662, 664, 680, 830, 1324, 1411, 1655, 1660, 2648, 2822, 3310, 3320, 5627, 5644, 6620, 7055, 11254, 11288, 13240, 14110, 22508, 27473, 28135, 28220, 45016, 54946, 56270, 56440, 109892, 112540, 137365, 219784, 225080, 274730, 467041, 549460, 934082, 1098920, 1868164, 2335205, 3736328, 4670410, 9340820, 18681640]

約数ペア:
[(1, 18681640), (2, 9340820), (4, 4670410), (5, 3736328), (8, 2335205), (10, 1868164), (17, 1098920), (20, 934082), (34, 549460), (40, 467041), (68, 274730), (83, 225080), (85, 219784), (136, 137365), (166, 112540), (170, 109892), (331, 56440), (332, 56270), (340, 54946), (415, 45016), (662, 28220), (664, 28135), (680, 27473), (830, 22508), (1324, 14110), (1411, 13240), (1655, 11288), (1660, 11254), (2648, 7055), (2822, 6620), (3310, 5644), (3320, 5627)]

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