1640269744

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{13781}}^1$

素因数の和:14005

約数の個数: 40

約数和(自身を含む): 3270964752

約数和(自身を除く): 1630695008

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 173, 344, 346, 688, 692, 1384, 2768, 7439, 13781, 14878, 27562, 29756, 55124, 59512, 110248, 119024, 220496, 592583, 1185166, 2370332, 2384113, 4740664, 4768226, 9481328, 9536452, 19072904, 38145808, 102516859, 205033718, 410067436, 820134872, 1640269744]

約数ペア:

[(1, 1640269744), (2, 820134872), (4, 410067436), (8, 205033718), (16, 102516859), (43, 38145808), (86, 19072904), (172, 9536452), (173, 9481328), (344, 4768226), (346, 4740664), (688, 2384113), (692, 2370332), (1384, 1185166), (2768, 592583), (7439, 220496), (13781, 119024), (14878, 110248), (27562, 59512), (29756, 55124)]