21481048

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{829}}^1$

素因数の和:955

約数の個数: 32

約数和(自身を含む): 41832000

約数和(自身を除く): 20350952

約数列:

[1, 2, 4, 8, 41, 79, 82, 158, 164, 316, 328, 632, 829, 1658, 3239, 3316, 6478, 6632, 12956, 25912, 33989, 65491, 67978, 130982, 135956, 261964, 271912, 523928, 2685131, 5370262, 10740524, 21481048]

約数ペア:

[(1, 21481048), (2, 10740524), (4, 5370262), (8, 2685131), (41, 523928), (79, 271912), (82, 261964), (158, 135956), (164, 130982), (316, 67978), (328, 65491), (632, 33989), (829, 25912), (1658, 12956), (3239, 6632), (3316, 6478)]