19978830

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{221987}}^1$

素因数の和:222000

約数の個数: 24

約数和(自身を含む): 51945192

約数和(自身を除く): 31966362

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 221987, 443974, 665961, 1109935, 1331922, 1997883, 2219870, 3329805, 3995766, 6659610, 9989415, 19978830]

約数ペア:

[(1, 19978830), (2, 9989415), (3, 6659610), (5, 3995766), (6, 3329805), (9, 2219870), (10, 1997883), (15, 1331922), (18, 1109935), (30, 665961), (45, 443974), (90, 221987)]