21373156

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 44352000

約数和(自身を除く): 22978844

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 109, 149, 188, 218, 298, 329, 436, 596, 658, 763, 1043, 1316, 1526, 2086, 3052, 4172, 5123, 7003, 10246, 14006, 16241, 20492, 28012, 32482, 35861, 49021, 64964, 71722, 98042, 113687, 143444, 196084, 227374, 454748, 763327, 1526654, 3053308, 5343289, 10686578, 21373156]

約数ペア:

[(1, 21373156), (2, 10686578), (4, 5343289), (7, 3053308), (14, 1526654), (28, 763327), (47, 454748), (94, 227374), (109, 196084), (149, 143444), (188, 113687), (218, 98042), (298, 71722), (329, 64964), (436, 49021), (596, 35861), (658, 32482), (763, 28012), (1043, 20492), (1316, 16241), (1526, 14006), (2086, 10246), (3052, 7003), (4172, 5123)]