21294676

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{17}}^2\times {\mathrm{109}}^1$

素因数の和:173

約数の個数: 54

約数和(自身を含む): 43259370

約数和(自身を除く): 21964694

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 109, 169, 218, 221, 289, 338, 436, 442, 578, 676, 884, 1156, 1417, 1853, 2834, 2873, 3706, 3757, 5668, 5746, 7412, 7514, 11492, 15028, 18421, 24089, 31501, 36842, 48178, 48841, 63002, 73684, 96356, 97682, 126004, 195364, 313157, 409513, 626314, 819026, 1252628, 1638052, 5323669, 10647338, 21294676]

約数ペア:

[(1, 21294676), (2, 10647338), (4, 5323669), (13, 1638052), (17, 1252628), (26, 819026), (34, 626314), (52, 409513), (68, 313157), (109, 195364), (169, 126004), (218, 97682), (221, 96356), (289, 73684), (338, 63002), (436, 48841), (442, 48178), (578, 36842), (676, 31501), (884, 24089), (1156, 18421), (1417, 15028), (1853, 11492), (2834, 7514), (2873, 7412), (3706, 5746), (3757, 5668)]