19800716

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{1723}}^1$

素因数の和:1770

約数の個数: 36

約数和(自身を含む): 39751992

約数和(自身を除く): 19951276

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 169, 221, 338, 442, 676, 884, 1723, 2873, 3446, 5746, 6892, 11492, 22399, 29291, 44798, 58582, 89596, 117164, 291187, 380783, 582374, 761566, 1164748, 1523132, 4950179, 9900358, 19800716]

約数ペア:

[(1, 19800716), (2, 9900358), (4, 4950179), (13, 1523132), (17, 1164748), (26, 761566), (34, 582374), (52, 380783), (68, 291187), (169, 117164), (221, 89596), (338, 58582), (442, 44798), (676, 29291), (884, 22399), (1723, 11492), (2873, 6892), (3446, 5746)]