64720528

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{397}}^1\times {\mathrm{443}}^1$

素因数の和:871

約数の個数: 40

約数和(自身を含む): 131473728

約数和(自身を除く): 66753200

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 397, 443, 794, 886, 1588, 1772, 3176, 3544, 6352, 7088, 9131, 10189, 18262, 20378, 36524, 40756, 73048, 81512, 146096, 163024, 175871, 351742, 703484, 1406968, 2813936, 4045033, 8090066, 16180132, 32360264, 64720528]

約数ペア:

[(1, 64720528), (2, 32360264), (4, 16180132), (8, 8090066), (16, 4045033), (23, 2813936), (46, 1406968), (92, 703484), (184, 351742), (368, 175871), (397, 163024), (443, 146096), (794, 81512), (886, 73048), (1588, 40756), (1772, 36524), (3176, 20378), (3544, 18262), (6352, 10189), (7088, 9131)]