640590448

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{27479}}^1$

素因数の和:27565

約数の個数: 40

約数和(自身を含む): 1308487680

約数和(自身を除く): 667897232

約数列:

[1, 2, 4, 8, 16, 31, 47, 62, 94, 124, 188, 248, 376, 496, 752, 1457, 2914, 5828, 11656, 23312, 27479, 54958, 109916, 219832, 439664, 851849, 1291513, 1703698, 2583026, 3407396, 5166052, 6814792, 10332104, 13629584, 20664208, 40036903, 80073806, 160147612, 320295224, 640590448]

約数ペア:

[(1, 640590448), (2, 320295224), (4, 160147612), (8, 80073806), (16, 40036903), (31, 20664208), (47, 13629584), (62, 10332104), (94, 6814792), (124, 5166052), (188, 3407396), (248, 2583026), (376, 1703698), (496, 1291513), (752, 851849), (1457, 439664), (2914, 219832), (5828, 109916), (11656, 54958), (23312, 27479)]