19457620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{10691}}^1$

素因数の和:10720

約数の個数: 48

約数和(自身を含む): 50295168

約数和(自身を除く): 30837548

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 10691, 21382, 42764, 53455, 74837, 106910, 138983, 149674, 213820, 277966, 299348, 374185, 555932, 694915, 748370, 972881, 1389830, 1496740, 1945762, 2779660, 3891524, 4864405, 9728810, 19457620]

約数ペア:

[(1, 19457620), (2, 9728810), (4, 4864405), (5, 3891524), (7, 2779660), (10, 1945762), (13, 1496740), (14, 1389830), (20, 972881), (26, 748370), (28, 694915), (35, 555932), (52, 374185), (65, 299348), (70, 277966), (91, 213820), (130, 149674), (140, 138983), (182, 106910), (260, 74837), (364, 53455), (455, 42764), (910, 21382), (1820, 10691)]