638995312

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{883}}^1\times {\mathrm{1459}}^1$

素因数の和:2381

約数の個数: 40

約数和(自身を含む): 1280314880

約数和(自身を除く): 641319568

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 883, 1459, 1766, 2918, 3532, 5836, 7064, 11672, 14128, 23344, 27373, 45229, 54746, 90458, 109492, 180916, 218984, 361832, 437968, 723664, 1288297, 2576594, 5153188, 10306376, 20612752, 39937207, 79874414, 159748828, 319497656, 638995312]

約数ペア:

[(1, 638995312), (2, 319497656), (4, 159748828), (8, 79874414), (16, 39937207), (31, 20612752), (62, 10306376), (124, 5153188), (248, 2576594), (496, 1288297), (883, 723664), (1459, 437968), (1766, 361832), (2918, 218984), (3532, 180916), (5836, 109492), (7064, 90458), (11672, 54746), (14128, 45229), (23344, 27373)]