21346780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{317}}^1$

素因数の和:383

約数の個数: 96

約数和(自身を含む): 56843136

約数和(自身を除く): 35496356

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 37, 52, 65, 70, 74, 91, 130, 140, 148, 182, 185, 259, 260, 317, 364, 370, 455, 481, 518, 634, 740, 910, 962, 1036, 1268, 1295, 1585, 1820, 1924, 2219, 2405, 2590, 3170, 3367, 4121, 4438, 4810, 5180, 6340, 6734, 8242, 8876, 9620, 11095, 11729, 13468, 16484, 16835, 20605, 22190, 23458, 28847, 33670, 41210, 44380, 46916, 57694, 58645, 67340, 82103, 82420, 115388, 117290, 144235, 152477, 164206, 234580, 288470, 304954, 328412, 410515, 576940, 609908, 762385, 821030, 1067339, 1524770, 1642060, 2134678, 3049540, 4269356, 5336695, 10673390, 21346780]

約数ペア:

[(1, 21346780), (2, 10673390), (4, 5336695), (5, 4269356), (7, 3049540), (10, 2134678), (13, 1642060), (14, 1524770), (20, 1067339), (26, 821030), (28, 762385), (35, 609908), (37, 576940), (52, 410515), (65, 328412), (70, 304954), (74, 288470), (91, 234580), (130, 164206), (140, 152477), (148, 144235), (182, 117290), (185, 115388), (259, 82420), (260, 82103), (317, 67340), (364, 58645), (370, 57694), (455, 46916), (481, 44380), (518, 41210), (634, 33670), (740, 28847), (910, 23458), (962, 22190), (1036, 20605), (1268, 16835), (1295, 16484), (1585, 13468), (1820, 11729), (1924, 11095), (2219, 9620), (2405, 8876), (2590, 8242), (3170, 6734), (3367, 6340), (4121, 5180), (4438, 4810)]