400728278

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1\times {\mathrm{1109}}^1$

素因数の和:1424

約数の個数: 32

約数和(自身を含む): 652946400

約数和(自身を除く): 252218122

約数列:

[1, 2, 19, 37, 38, 74, 257, 514, 703, 1109, 1406, 2218, 4883, 9509, 9766, 19018, 21071, 41033, 42142, 82066, 180671, 285013, 361342, 570026, 779627, 1559254, 5415247, 10545481, 10830494, 21090962, 200364139, 400728278]

約数ペア:

[(1, 400728278), (2, 200364139), (19, 21090962), (37, 10830494), (38, 10545481), (74, 5415247), (257, 1559254), (514, 779627), (703, 570026), (1109, 361342), (1406, 285013), (2218, 180671), (4883, 82066), (9509, 42142), (9766, 41033), (19018, 21071)]