About the Number

1921680

1921679 ← → 1921681

2進数表記:111010101001010010000

漢数字表記:百九十二万千六百八十

素因数分解:

2 4 × 3 2 × 5 1 × 17 1 × 157 1

素因数の和:193
約数の個数: 120
約数和(自身を含む): 6876792
約数和(自身を除く): 4955112

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 34, 36, 40, 45, 48, 51, 60, 68, 72, 80, 85, 90, 102, 120, 136, 144, 153, 157, 170, 180, 204, 240, 255, 272, 306, 314, 340, 360, 408, 471, 510, 612, 628, 680, 720, 765, 785, 816, 942, 1020, 1224, 1256, 1360, 1413, 1530, 1570, 1884, 2040, 2355, 2448, 2512, 2669, 2826, 3060, 3140, 3768, 4080, 4710, 5338, 5652, 6120, 6280, 7065, 7536, 8007, 9420, 10676, 11304, 12240, 12560, 13345, 14130, 16014, 18840, 21352, 22608, 24021, 26690, 28260, 32028, 37680, 40035, 42704, 48042, 53380, 56520, 64056, 80070, 96084, 106760, 113040, 120105, 128112, 160140, 192168, 213520, 240210, 320280, 384336, 480420, 640560, 960840, 1921680]

約数ペア:
[(1, 1921680), (2, 960840), (3, 640560), (4, 480420), (5, 384336), (6, 320280), (8, 240210), (9, 213520), (10, 192168), (12, 160140), (15, 128112), (16, 120105), (17, 113040), (18, 106760), (20, 96084), (24, 80070), (30, 64056), (34, 56520), (36, 53380), (40, 48042), (45, 42704), (48, 40035), (51, 37680), (60, 32028), (68, 28260), (72, 26690), (80, 24021), (85, 22608), (90, 21352), (102, 18840), (120, 16014), (136, 14130), (144, 13345), (153, 12560), (157, 12240), (170, 11304), (180, 10676), (204, 9420), (240, 8007), (255, 7536), (272, 7065), (306, 6280), (314, 6120), (340, 5652), (360, 5338), (408, 4710), (471, 4080), (510, 3768), (612, 3140), (628, 3060), (680, 2826), (720, 2669), (765, 2512), (785, 2448), (816, 2355), (942, 2040), (1020, 1884), (1224, 1570), (1256, 1530), (1360, 1413)]

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