21096160

素因数分解:

$2^5\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1669}}^1$

素因数の和:1763

約数の個数: 48

約数和(自身を含む): 50500800

約数和(自身を除く): 29404640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 79, 80, 158, 160, 316, 395, 632, 790, 1264, 1580, 1669, 2528, 3160, 3338, 6320, 6676, 8345, 12640, 13352, 16690, 26704, 33380, 53408, 66760, 131851, 133520, 263702, 267040, 527404, 659255, 1054808, 1318510, 2109616, 2637020, 4219232, 5274040, 10548080, 21096160]

約数ペア:

[(1, 21096160), (2, 10548080), (4, 5274040), (5, 4219232), (8, 2637020), (10, 2109616), (16, 1318510), (20, 1054808), (32, 659255), (40, 527404), (79, 267040), (80, 263702), (158, 133520), (160, 131851), (316, 66760), (395, 53408), (632, 33380), (790, 26704), (1264, 16690), (1580, 13352), (1669, 12640), (2528, 8345), (3160, 6676), (3338, 6320)]