21520044

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{6569}}^1$

素因数の和:6599

約数の個数: 72

約数和(自身を含む): 66961440

約数和(自身を除く): 45441396

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 84, 91, 117, 126, 156, 182, 234, 252, 273, 364, 468, 546, 819, 1092, 1638, 3276, 6569, 13138, 19707, 26276, 39414, 45983, 59121, 78828, 85397, 91966, 118242, 137949, 170794, 183932, 236484, 256191, 275898, 341588, 413847, 512382, 551796, 597779, 768573, 827694, 1024764, 1195558, 1537146, 1655388, 1793337, 2391116, 3074292, 3586674, 5380011, 7173348, 10760022, 21520044]

約数ペア:

[(1, 21520044), (2, 10760022), (3, 7173348), (4, 5380011), (6, 3586674), (7, 3074292), (9, 2391116), (12, 1793337), (13, 1655388), (14, 1537146), (18, 1195558), (21, 1024764), (26, 827694), (28, 768573), (36, 597779), (39, 551796), (42, 512382), (52, 413847), (63, 341588), (78, 275898), (84, 256191), (91, 236484), (117, 183932), (126, 170794), (156, 137949), (182, 118242), (234, 91966), (252, 85397), (273, 78828), (364, 59121), (468, 45983), (546, 39414), (819, 26276), (1092, 19707), (1638, 13138), (3276, 6569)]