403782020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{5591}}^1$

素因数の和:5780

約数の個数: 48

約数和(自身を含む): 890604288

約数和(自身を除く): 486822268

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 157, 230, 314, 460, 628, 785, 1570, 3140, 3611, 5591, 7222, 11182, 14444, 18055, 22364, 27955, 36110, 55910, 72220, 111820, 128593, 257186, 514372, 642965, 877787, 1285930, 1755574, 2571860, 3511148, 4388935, 8777870, 17555740, 20189101, 40378202, 80756404, 100945505, 201891010, 403782020]

約数ペア:

[(1, 403782020), (2, 201891010), (4, 100945505), (5, 80756404), (10, 40378202), (20, 20189101), (23, 17555740), (46, 8777870), (92, 4388935), (115, 3511148), (157, 2571860), (230, 1755574), (314, 1285930), (460, 877787), (628, 642965), (785, 514372), (1570, 257186), (3140, 128593), (3611, 111820), (5591, 72220), (7222, 55910), (11182, 36110), (14444, 27955), (18055, 22364)]