21102620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:291

約数の個数: 96

約数和(自身を含む): 56318976

約数和(自身を除く): 35216356

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 71, 77, 110, 140, 142, 154, 193, 220, 284, 308, 355, 385, 386, 497, 710, 770, 772, 781, 965, 994, 1351, 1420, 1540, 1562, 1930, 1988, 2123, 2485, 2702, 3124, 3860, 3905, 4246, 4970, 5404, 5467, 6755, 7810, 8492, 9940, 10615, 10934, 13510, 13703, 14861, 15620, 21230, 21868, 27020, 27335, 27406, 29722, 42460, 54670, 54812, 59444, 68515, 74305, 95921, 109340, 137030, 148610, 150733, 191842, 274060, 297220, 301466, 383684, 479605, 602932, 753665, 959210, 1055131, 1507330, 1918420, 2110262, 3014660, 4220524, 5275655, 10551310, 21102620]

約数ペア:

[(1, 21102620), (2, 10551310), (4, 5275655), (5, 4220524), (7, 3014660), (10, 2110262), (11, 1918420), (14, 1507330), (20, 1055131), (22, 959210), (28, 753665), (35, 602932), (44, 479605), (55, 383684), (70, 301466), (71, 297220), (77, 274060), (110, 191842), (140, 150733), (142, 148610), (154, 137030), (193, 109340), (220, 95921), (284, 74305), (308, 68515), (355, 59444), (385, 54812), (386, 54670), (497, 42460), (710, 29722), (770, 27406), (772, 27335), (781, 27020), (965, 21868), (994, 21230), (1351, 15620), (1420, 14861), (1540, 13703), (1562, 13510), (1930, 10934), (1988, 10615), (2123, 9940), (2485, 8492), (2702, 7810), (3124, 6755), (3860, 5467), (3905, 5404), (4246, 4970)]