About the Number

121680

121679 ← → 121681

2進数表記:11101101101010000

漢数字表記:十二万千六百八十

素因数分解:

2 4 × 3 2 × 5 1 × 13 2

素因数の和:45
約数の個数: 90
約数和(自身を含む): 442494
約数和(自身を除く): 320814

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 117, 120, 130, 144, 156, 169, 180, 195, 208, 234, 240, 260, 312, 338, 360, 390, 468, 507, 520, 585, 624, 676, 720, 780, 845, 936, 1014, 1040, 1170, 1352, 1521, 1560, 1690, 1872, 2028, 2340, 2535, 2704, 3042, 3120, 3380, 4056, 4680, 5070, 6084, 6760, 7605, 8112, 9360, 10140, 12168, 13520, 15210, 20280, 24336, 30420, 40560, 60840, 121680]

約数ペア:
[(1, 121680), (2, 60840), (3, 40560), (4, 30420), (5, 24336), (6, 20280), (8, 15210), (9, 13520), (10, 12168), (12, 10140), (13, 9360), (15, 8112), (16, 7605), (18, 6760), (20, 6084), (24, 5070), (26, 4680), (30, 4056), (36, 3380), (39, 3120), (40, 3042), (45, 2704), (48, 2535), (52, 2340), (60, 2028), (65, 1872), (72, 1690), (78, 1560), (80, 1521), (90, 1352), (104, 1170), (117, 1040), (120, 1014), (130, 936), (144, 845), (156, 780), (169, 720), (180, 676), (195, 624), (208, 585), (234, 520), (240, 507), (260, 468), (312, 390), (338, 360)]

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