About the Number

81210840

81210839 ← → 81210841

2進数表記:100110101110010110111011000

漢数字表記:八千百二十一万八百四十

素因数分解:

2 3 × 3 1 × 5 1 × 53 1 × 113 2

素因数の和:293
約数の個数: 96
約数和(自身を含む): 250445520
約数和(自身を除く): 169234680

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 53, 60, 106, 113, 120, 159, 212, 226, 265, 318, 339, 424, 452, 530, 565, 636, 678, 795, 904, 1060, 1130, 1272, 1356, 1590, 1695, 2120, 2260, 2712, 3180, 3390, 4520, 5989, 6360, 6780, 11978, 12769, 13560, 17967, 23956, 25538, 29945, 35934, 38307, 47912, 51076, 59890, 63845, 71868, 76614, 89835, 102152, 119780, 127690, 143736, 153228, 179670, 191535, 239560, 255380, 306456, 359340, 383070, 510760, 676757, 718680, 766140, 1353514, 1532280, 2030271, 2707028, 3383785, 4060542, 5414056, 6767570, 8121084, 10151355, 13535140, 16242168, 20302710, 27070280, 40605420, 81210840]

約数ペア:
[(1, 81210840), (2, 40605420), (3, 27070280), (4, 20302710), (5, 16242168), (6, 13535140), (8, 10151355), (10, 8121084), (12, 6767570), (15, 5414056), (20, 4060542), (24, 3383785), (30, 2707028), (40, 2030271), (53, 1532280), (60, 1353514), (106, 766140), (113, 718680), (120, 676757), (159, 510760), (212, 383070), (226, 359340), (265, 306456), (318, 255380), (339, 239560), (424, 191535), (452, 179670), (530, 153228), (565, 143736), (636, 127690), (678, 119780), (795, 102152), (904, 89835), (1060, 76614), (1130, 71868), (1272, 63845), (1356, 59890), (1590, 51076), (1695, 47912), (2120, 38307), (2260, 35934), (2712, 29945), (3180, 25538), (3390, 23956), (4520, 17967), (5989, 13560), (6360, 12769), (6780, 11978)]

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