21138030

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{991}}^1$

素因数の和:1086

約数の個数: 64

約数和(自身を含む): 57139200

約数和(自身を除く): 36001170

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 79, 90, 135, 158, 237, 270, 395, 474, 711, 790, 991, 1185, 1422, 1982, 2133, 2370, 2973, 3555, 4266, 4955, 5946, 7110, 8919, 9910, 10665, 14865, 17838, 21330, 26757, 29730, 44595, 53514, 78289, 89190, 133785, 156578, 234867, 267570, 391445, 469734, 704601, 782890, 1174335, 1409202, 2113803, 2348670, 3523005, 4227606, 7046010, 10569015, 21138030]

約数ペア:

[(1, 21138030), (2, 10569015), (3, 7046010), (5, 4227606), (6, 3523005), (9, 2348670), (10, 2113803), (15, 1409202), (18, 1174335), (27, 782890), (30, 704601), (45, 469734), (54, 391445), (79, 267570), (90, 234867), (135, 156578), (158, 133785), (237, 89190), (270, 78289), (395, 53514), (474, 44595), (711, 29730), (790, 26757), (991, 21330), (1185, 17838), (1422, 14865), (1982, 10665), (2133, 9910), (2370, 8919), (2973, 7110), (3555, 5946), (4266, 4955)]