21000953360

素因数分解:

$2^4\times 5^1\times {\mathrm{7489}}^1\times {\mathrm{35053}}^1$

素因数の和:42555

約数の個数: 40

約数和(自身を含む): 48835129560

約数和(自身を除く): 27834176200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 7489, 14978, 29956, 35053, 37445, 59912, 70106, 74890, 119824, 140212, 149780, 175265, 280424, 299560, 350530, 560848, 599120, 701060, 1402120, 2804240, 262511917, 525023834, 1050047668, 1312559585, 2100095336, 2625119170, 4200190672, 5250238340, 10500476680, 21000953360]

約数ペア:

[(1, 21000953360), (2, 10500476680), (4, 5250238340), (5, 4200190672), (8, 2625119170), (10, 2100095336), (16, 1312559585), (20, 1050047668), (40, 525023834), (80, 262511917), (7489, 2804240), (14978, 1402120), (29956, 701060), (35053, 599120), (37445, 560848), (59912, 350530), (70106, 299560), (74890, 280424), (119824, 175265), (140212, 149780)]