About the Number

72168720

72168719 ← → 72168721

2進数表記:100010011010011010100010000

漢数字表記:七千二百十六万八千七百二十

素因数分解:

2 4 × 3 1 × 5 1 × 13 1 × 23131 1

素因数の和:23160
約数の個数: 80
約数和(自身を含む): 240942912
約数和(自身を除く): 168774192

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 23131, 46262, 69393, 92524, 115655, 138786, 185048, 231310, 277572, 300703, 346965, 370096, 462620, 555144, 601406, 693930, 902109, 925240, 1110288, 1202812, 1387860, 1503515, 1804218, 1850480, 2405624, 2775720, 3007030, 3608436, 4510545, 4811248, 5551440, 6014060, 7216872, 9021090, 12028120, 14433744, 18042180, 24056240, 36084360, 72168720]

約数ペア:
[(1, 72168720), (2, 36084360), (3, 24056240), (4, 18042180), (5, 14433744), (6, 12028120), (8, 9021090), (10, 7216872), (12, 6014060), (13, 5551440), (15, 4811248), (16, 4510545), (20, 3608436), (24, 3007030), (26, 2775720), (30, 2405624), (39, 1850480), (40, 1804218), (48, 1503515), (52, 1387860), (60, 1202812), (65, 1110288), (78, 925240), (80, 902109), (104, 693930), (120, 601406), (130, 555144), (156, 462620), (195, 370096), (208, 346965), (240, 300703), (260, 277572), (312, 231310), (390, 185048), (520, 138786), (624, 115655), (780, 92524), (1040, 69393), (1560, 46262), (3120, 23131)]

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