19917738

素因数分解:

$2^1\times 3^6\times {\mathrm{19}}^1\times {\mathrm{719}}^1$

素因数の和:758

約数の個数: 56

約数和(自身を含む): 47217600

約数和(自身を除く): 27299862

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 81, 114, 162, 171, 243, 342, 486, 513, 719, 729, 1026, 1438, 1458, 1539, 2157, 3078, 4314, 4617, 6471, 9234, 12942, 13661, 13851, 19413, 27322, 27702, 38826, 40983, 58239, 81966, 116478, 122949, 174717, 245898, 349434, 368847, 524151, 737694, 1048302, 1106541, 2213082, 3319623, 6639246, 9958869, 19917738]

約数ペア:

[(1, 19917738), (2, 9958869), (3, 6639246), (6, 3319623), (9, 2213082), (18, 1106541), (19, 1048302), (27, 737694), (38, 524151), (54, 368847), (57, 349434), (81, 245898), (114, 174717), (162, 122949), (171, 116478), (243, 81966), (342, 58239), (486, 40983), (513, 38826), (719, 27702), (729, 27322), (1026, 19413), (1438, 13851), (1458, 13661), (1539, 12942), (2157, 9234), (3078, 6471), (4314, 4617)]