81605580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{677}}^1$

素因数の和:744

約数の個数: 144

約数和(自身を含む): 272686176

約数和(自身を除く): 191080596

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 41, 42, 49, 60, 70, 82, 84, 98, 105, 123, 140, 147, 164, 196, 205, 210, 245, 246, 287, 294, 410, 420, 490, 492, 574, 588, 615, 677, 735, 820, 861, 980, 1148, 1230, 1354, 1435, 1470, 1722, 2009, 2031, 2460, 2708, 2870, 2940, 3385, 3444, 4018, 4062, 4305, 4739, 5740, 6027, 6770, 8036, 8124, 8610, 9478, 10045, 10155, 12054, 13540, 14217, 17220, 18956, 20090, 20310, 23695, 24108, 27757, 28434, 30135, 33173, 40180, 40620, 47390, 55514, 56868, 60270, 66346, 71085, 83271, 94780, 99519, 111028, 120540, 132692, 138785, 142170, 165865, 166542, 194299, 199038, 277570, 284340, 331730, 333084, 388598, 398076, 416355, 497595, 555140, 582897, 663460, 777196, 832710, 971495, 995190, 1165794, 1360093, 1665420, 1942990, 1990380, 2331588, 2720186, 2914485, 3885980, 4080279, 5440372, 5828970, 6800465, 8160558, 11657940, 13600930, 16321116, 20401395, 27201860, 40802790, 81605580]

約数ペア:

[(1, 81605580), (2, 40802790), (3, 27201860), (4, 20401395), (5, 16321116), (6, 13600930), (7, 11657940), (10, 8160558), (12, 6800465), (14, 5828970), (15, 5440372), (20, 4080279), (21, 3885980), (28, 2914485), (30, 2720186), (35, 2331588), (41, 1990380), (42, 1942990), (49, 1665420), (60, 1360093), (70, 1165794), (82, 995190), (84, 971495), (98, 832710), (105, 777196), (123, 663460), (140, 582897), (147, 555140), (164, 497595), (196, 416355), (205, 398076), (210, 388598), (245, 333084), (246, 331730), (287, 284340), (294, 277570), (410, 199038), (420, 194299), (490, 166542), (492, 165865), (574, 142170), (588, 138785), (615, 132692), (677, 120540), (735, 111028), (820, 99519), (861, 94780), (980, 83271), (1148, 71085), (1230, 66346), (1354, 60270), (1435, 56868), (1470, 55514), (1722, 47390), (2009, 40620), (2031, 40180), (2460, 33173), (2708, 30135), (2870, 28434), (2940, 27757), (3385, 24108), (3444, 23695), (4018, 20310), (4062, 20090), (4305, 18956), (4739, 17220), (5740, 14217), (6027, 13540), (6770, 12054), (8036, 10155), (8124, 10045), (8610, 9478)]