641948000

素因数分解:

$2^5\times 5^3\times {\mathrm{31}}^2\times {\mathrm{167}}^1$

素因数の和:254

約数の個数: 144

約数和(自身を含む): 1639546272

約数和(自身を除く): 997598272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 80, 100, 124, 125, 155, 160, 167, 200, 248, 250, 310, 334, 400, 496, 500, 620, 668, 775, 800, 835, 961, 992, 1000, 1240, 1336, 1550, 1670, 1922, 2000, 2480, 2672, 3100, 3340, 3844, 3875, 4000, 4175, 4805, 4960, 5177, 5344, 6200, 6680, 7688, 7750, 8350, 9610, 10354, 12400, 13360, 15376, 15500, 16700, 19220, 20708, 20875, 24025, 24800, 25885, 26720, 30752, 31000, 33400, 38440, 41416, 41750, 48050, 51770, 62000, 66800, 76880, 82832, 83500, 96100, 103540, 120125, 124000, 129425, 133600, 153760, 160487, 165664, 167000, 192200, 207080, 240250, 258850, 320974, 334000, 384400, 414160, 480500, 517700, 641948, 647125, 668000, 768800, 802435, 828320, 961000, 1035400, 1283896, 1294250, 1604870, 1922000, 2070800, 2567792, 2588500, 3209740, 3844000, 4012175, 4141600, 5135584, 5177000, 6419480, 8024350, 10354000, 12838960, 16048700, 20060875, 20708000, 25677920, 32097400, 40121750, 64194800, 80243500, 128389600, 160487000, 320974000, 641948000]

約数ペア:

[(1, 641948000), (2, 320974000), (4, 160487000), (5, 128389600), (8, 80243500), (10, 64194800), (16, 40121750), (20, 32097400), (25, 25677920), (31, 20708000), (32, 20060875), (40, 16048700), (50, 12838960), (62, 10354000), (80, 8024350), (100, 6419480), (124, 5177000), (125, 5135584), (155, 4141600), (160, 4012175), (167, 3844000), (200, 3209740), (248, 2588500), (250, 2567792), (310, 2070800), (334, 1922000), (400, 1604870), (496, 1294250), (500, 1283896), (620, 1035400), (668, 961000), (775, 828320), (800, 802435), (835, 768800), (961, 668000), (992, 647125), (1000, 641948), (1240, 517700), (1336, 480500), (1550, 414160), (1670, 384400), (1922, 334000), (2000, 320974), (2480, 258850), (2672, 240250), (3100, 207080), (3340, 192200), (3844, 167000), (3875, 165664), (4000, 160487), (4175, 153760), (4805, 133600), (4960, 129425), (5177, 124000), (5344, 120125), (6200, 103540), (6680, 96100), (7688, 83500), (7750, 82832), (8350, 76880), (9610, 66800), (10354, 62000), (12400, 51770), (13360, 48050), (15376, 41750), (15500, 41416), (16700, 38440), (19220, 33400), (20708, 31000), (20875, 30752), (24025, 26720), (24800, 25885)]