About the Number

81980640

81980639 ← → 81980641

2進数表記:100111000101110110011100000

漢数字表記:八千百九十八万六百四十

素因数分解:

2 5 × 3 3 × 5 1 × 7 1 × 2711 1

素因数の和:2742
約数の個数: 192
約数和(自身を含む): 328043520
約数和(自身を除く): 246062880

約数列:
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 168, 180, 189, 210, 216, 224, 240, 252, 270, 280, 288, 315, 336, 360, 378, 420, 432, 480, 504, 540, 560, 630, 672, 720, 756, 840, 864, 945, 1008, 1080, 1120, 1260, 1440, 1512, 1680, 1890, 2016, 2160, 2520, 2711, 3024, 3360, 3780, 4320, 5040, 5422, 6048, 7560, 8133, 10080, 10844, 13555, 15120, 16266, 18977, 21688, 24399, 27110, 30240, 32532, 37954, 40665, 43376, 48798, 54220, 56931, 65064, 73197, 75908, 81330, 86752, 94885, 97596, 108440, 113862, 121995, 130128, 146394, 151816, 162660, 170793, 189770, 195192, 216880, 227724, 243990, 260256, 284655, 292788, 303632, 325320, 341586, 365985, 379540, 390384, 433760, 455448, 487980, 512379, 569310, 585576, 607264, 650640, 683172, 731970, 759080, 780768, 853965, 910896, 975960, 1024758, 1138620, 1171152, 1301280, 1366344, 1463940, 1518160, 1707930, 1821792, 1951920, 2049516, 2277240, 2342304, 2561895, 2732688, 2927880, 3036320, 3415860, 3903840, 4099032, 4554480, 5123790, 5465376, 5855760, 6831720, 8198064, 9108960, 10247580, 11711520, 13663440, 16396128, 20495160, 27326880, 40990320, 81980640]

約数ペア:
[(1, 81980640), (2, 40990320), (3, 27326880), (4, 20495160), (5, 16396128), (6, 13663440), (7, 11711520), (8, 10247580), (9, 9108960), (10, 8198064), (12, 6831720), (14, 5855760), (15, 5465376), (16, 5123790), (18, 4554480), (20, 4099032), (21, 3903840), (24, 3415860), (27, 3036320), (28, 2927880), (30, 2732688), (32, 2561895), (35, 2342304), (36, 2277240), (40, 2049516), (42, 1951920), (45, 1821792), (48, 1707930), (54, 1518160), (56, 1463940), (60, 1366344), (63, 1301280), (70, 1171152), (72, 1138620), (80, 1024758), (84, 975960), (90, 910896), (96, 853965), (105, 780768), (108, 759080), (112, 731970), (120, 683172), (126, 650640), (135, 607264), (140, 585576), (144, 569310), (160, 512379), (168, 487980), (180, 455448), (189, 433760), (210, 390384), (216, 379540), (224, 365985), (240, 341586), (252, 325320), (270, 303632), (280, 292788), (288, 284655), (315, 260256), (336, 243990), (360, 227724), (378, 216880), (420, 195192), (432, 189770), (480, 170793), (504, 162660), (540, 151816), (560, 146394), (630, 130128), (672, 121995), (720, 113862), (756, 108440), (840, 97596), (864, 94885), (945, 86752), (1008, 81330), (1080, 75908), (1120, 73197), (1260, 65064), (1440, 56931), (1512, 54220), (1680, 48798), (1890, 43376), (2016, 40665), (2160, 37954), (2520, 32532), (2711, 30240), (3024, 27110), (3360, 24399), (3780, 21688), (4320, 18977), (5040, 16266), (5422, 15120), (6048, 13555), (7560, 10844), (8133, 10080)]

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