About the Number

138581640

138581639 ← → 138581641

2進数表記:1000010000101001011010001000

漢数字表記:一億三千八百五十八万千六百四十

素因数分解:

2 3 × 3 2 × 5 1 × 41 2 × 229 1

素因数の和:328
約数の個数: 144
約数和(自身を含む): 463659300
約数和(自身を除く): 325077660

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 41, 45, 60, 72, 82, 90, 120, 123, 164, 180, 205, 229, 246, 328, 360, 369, 410, 458, 492, 615, 687, 738, 820, 916, 984, 1145, 1230, 1374, 1476, 1640, 1681, 1832, 1845, 2061, 2290, 2460, 2748, 2952, 3362, 3435, 3690, 4122, 4580, 4920, 5043, 5496, 6724, 6870, 7380, 8244, 8405, 9160, 9389, 10086, 10305, 13448, 13740, 14760, 15129, 16488, 16810, 18778, 20172, 20610, 25215, 27480, 28167, 30258, 33620, 37556, 40344, 41220, 46945, 50430, 56334, 60516, 67240, 75112, 75645, 82440, 84501, 93890, 100860, 112668, 121032, 140835, 151290, 169002, 187780, 201720, 225336, 281670, 302580, 338004, 375560, 384949, 422505, 563340, 605160, 676008, 769898, 845010, 1126680, 1154847, 1539796, 1690020, 1924745, 2309694, 3079592, 3380040, 3464541, 3849490, 4619388, 5774235, 6929082, 7698980, 9238776, 11548470, 13858164, 15397960, 17322705, 23096940, 27716328, 34645410, 46193880, 69290820, 138581640]

約数ペア:
[(1, 138581640), (2, 69290820), (3, 46193880), (4, 34645410), (5, 27716328), (6, 23096940), (8, 17322705), (9, 15397960), (10, 13858164), (12, 11548470), (15, 9238776), (18, 7698980), (20, 6929082), (24, 5774235), (30, 4619388), (36, 3849490), (40, 3464541), (41, 3380040), (45, 3079592), (60, 2309694), (72, 1924745), (82, 1690020), (90, 1539796), (120, 1154847), (123, 1126680), (164, 845010), (180, 769898), (205, 676008), (229, 605160), (246, 563340), (328, 422505), (360, 384949), (369, 375560), (410, 338004), (458, 302580), (492, 281670), (615, 225336), (687, 201720), (738, 187780), (820, 169002), (916, 151290), (984, 140835), (1145, 121032), (1230, 112668), (1374, 100860), (1476, 93890), (1640, 84501), (1681, 82440), (1832, 75645), (1845, 75112), (2061, 67240), (2290, 60516), (2460, 56334), (2748, 50430), (2952, 46945), (3362, 41220), (3435, 40344), (3690, 37556), (4122, 33620), (4580, 30258), (4920, 28167), (5043, 27480), (5496, 25215), (6724, 20610), (6870, 20172), (7380, 18778), (8244, 16810), (8405, 16488), (9160, 15129), (9389, 14760), (10086, 13740), (10305, 13448)]

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