21136245

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{1013}}^1$

素因数の和:1141

約数の個数: 32

約数和(自身を含む): 36796032

約数和(自身を除く): 15659787

約数列:

[1, 3, 5, 13, 15, 39, 65, 107, 195, 321, 535, 1013, 1391, 1605, 3039, 4173, 5065, 6955, 13169, 15195, 20865, 39507, 65845, 108391, 197535, 325173, 541955, 1409083, 1625865, 4227249, 7045415, 21136245]

約数ペア:

[(1, 21136245), (3, 7045415), (5, 4227249), (13, 1625865), (15, 1409083), (39, 541955), (65, 325173), (107, 197535), (195, 108391), (321, 65845), (535, 39507), (1013, 20865), (1391, 15195), (1605, 13169), (3039, 6955), (4173, 5065)]