About the Number

123180720

123180719 ← → 123180721

2進数表記:111010101111001011010110000

漢数字表記:一億二千三百十八万七百二十

素因数分解:

2 4 × 3 1 × 5 1 × 13 2 × 3037 1

素因数の和:3079
約数の個数: 120
約数和(自身を含む): 413629776
約数和(自身を除く): 290449056

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, 169, 195, 208, 240, 260, 312, 338, 390, 507, 520, 624, 676, 780, 845, 1014, 1040, 1352, 1560, 1690, 2028, 2535, 2704, 3037, 3120, 3380, 4056, 5070, 6074, 6760, 8112, 9111, 10140, 12148, 13520, 15185, 18222, 20280, 24296, 30370, 36444, 39481, 40560, 45555, 48592, 60740, 72888, 78962, 91110, 118443, 121480, 145776, 157924, 182220, 197405, 236886, 242960, 315848, 364440, 394810, 473772, 513253, 592215, 631696, 728880, 789620, 947544, 1026506, 1184430, 1539759, 1579240, 1895088, 2053012, 2368860, 2566265, 3079518, 3158480, 4106024, 4737720, 5132530, 6159036, 7698795, 8212048, 9475440, 10265060, 12318072, 15397590, 20530120, 24636144, 30795180, 41060240, 61590360, 123180720]

約数ペア:
[(1, 123180720), (2, 61590360), (3, 41060240), (4, 30795180), (5, 24636144), (6, 20530120), (8, 15397590), (10, 12318072), (12, 10265060), (13, 9475440), (15, 8212048), (16, 7698795), (20, 6159036), (24, 5132530), (26, 4737720), (30, 4106024), (39, 3158480), (40, 3079518), (48, 2566265), (52, 2368860), (60, 2053012), (65, 1895088), (78, 1579240), (80, 1539759), (104, 1184430), (120, 1026506), (130, 947544), (156, 789620), (169, 728880), (195, 631696), (208, 592215), (240, 513253), (260, 473772), (312, 394810), (338, 364440), (390, 315848), (507, 242960), (520, 236886), (624, 197405), (676, 182220), (780, 157924), (845, 145776), (1014, 121480), (1040, 118443), (1352, 91110), (1560, 78962), (1690, 72888), (2028, 60740), (2535, 48592), (2704, 45555), (3037, 40560), (3120, 39481), (3380, 36444), (4056, 30370), (5070, 24296), (6074, 20280), (6760, 18222), (8112, 15185), (9111, 13520), (10140, 12148)]

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