21508604

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{839}}^1$

素因数の和:902

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 22944196

約数列:

[1, 2, 4, 13, 17, 26, 29, 34, 52, 58, 68, 116, 221, 377, 442, 493, 754, 839, 884, 986, 1508, 1678, 1972, 3356, 6409, 10907, 12818, 14263, 21814, 24331, 25636, 28526, 43628, 48662, 57052, 97324, 185419, 316303, 370838, 413627, 632606, 741676, 827254, 1265212, 1654508, 5377151, 10754302, 21508604]

約数ペア:

[(1, 21508604), (2, 10754302), (4, 5377151), (13, 1654508), (17, 1265212), (26, 827254), (29, 741676), (34, 632606), (52, 413627), (58, 370838), (68, 316303), (116, 185419), (221, 97324), (377, 57052), (442, 48662), (493, 43628), (754, 28526), (839, 25636), (884, 24331), (986, 21814), (1508, 14263), (1678, 12818), (1972, 10907), (3356, 6409)]