21250416

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{241}}^1$

素因数の和:430

約数の個数: 80

約数和(自身を含む): 60496128

約数和(自身を除く): 39245712

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 66, 88, 132, 167, 176, 241, 264, 334, 482, 501, 528, 668, 723, 964, 1002, 1336, 1446, 1837, 1928, 2004, 2651, 2672, 2892, 3674, 3856, 4008, 5302, 5511, 5784, 7348, 7953, 8016, 10604, 11022, 11568, 14696, 15906, 21208, 22044, 29392, 31812, 40247, 42416, 44088, 63624, 80494, 88176, 120741, 127248, 160988, 241482, 321976, 442717, 482964, 643952, 885434, 965928, 1328151, 1770868, 1931856, 2656302, 3541736, 5312604, 7083472, 10625208, 21250416]

約数ペア:

[(1, 21250416), (2, 10625208), (3, 7083472), (4, 5312604), (6, 3541736), (8, 2656302), (11, 1931856), (12, 1770868), (16, 1328151), (22, 965928), (24, 885434), (33, 643952), (44, 482964), (48, 442717), (66, 321976), (88, 241482), (132, 160988), (167, 127248), (176, 120741), (241, 88176), (264, 80494), (334, 63624), (482, 44088), (501, 42416), (528, 40247), (668, 31812), (723, 29392), (964, 22044), (1002, 21208), (1336, 15906), (1446, 14696), (1837, 11568), (1928, 11022), (2004, 10604), (2651, 8016), (2672, 7953), (2892, 7348), (3674, 5784), (3856, 5511), (4008, 5302)]