20288519920

素因数分解:

$2^4\times 5^1\times {\mathrm{18049}}^1\times {\mathrm{14051}}^1$

素因数の和:32113

約数の個数: 40

約数和(自身を含む): 47176779600

約数和(自身を除く): 26888259680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 14051, 18049, 28102, 36098, 56204, 70255, 72196, 90245, 112408, 140510, 144392, 180490, 224816, 281020, 288784, 360980, 562040, 721960, 1124080, 1443920, 253606499, 507212998, 1014425996, 1268032495, 2028851992, 2536064990, 4057703984, 5072129980, 10144259960, 20288519920]

約数ペア:

[(1, 20288519920), (2, 10144259960), (4, 5072129980), (5, 4057703984), (8, 2536064990), (10, 2028851992), (16, 1268032495), (20, 1014425996), (40, 507212998), (80, 253606499), (14051, 1443920), (18049, 1124080), (28102, 721960), (36098, 562040), (56204, 360980), (70255, 288784), (72196, 281020), (90245, 224816), (112408, 180490), (140510, 144392)]