21116320

素因数分解:

$2^5\times 5^1\times {\mathrm{271}}^1\times {\mathrm{487}}^1$

素因数の和:773

約数の個数: 48

約数和(自身を含む): 50174208

約数和(自身を除く): 29057888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 271, 487, 542, 974, 1084, 1355, 1948, 2168, 2435, 2710, 3896, 4336, 4870, 5420, 7792, 8672, 9740, 10840, 15584, 19480, 21680, 38960, 43360, 77920, 131977, 263954, 527908, 659885, 1055816, 1319770, 2111632, 2639540, 4223264, 5279080, 10558160, 21116320]

約数ペア:

[(1, 21116320), (2, 10558160), (4, 5279080), (5, 4223264), (8, 2639540), (10, 2111632), (16, 1319770), (20, 1055816), (32, 659885), (40, 527908), (80, 263954), (160, 131977), (271, 77920), (487, 43360), (542, 38960), (974, 21680), (1084, 19480), (1355, 15584), (1948, 10840), (2168, 9740), (2435, 8672), (2710, 7792), (3896, 5420), (4336, 4870)]