21265296

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{643}}^1$

素因数の和:720

約数の個数: 80

約数和(自身を含む): 60371136

約数和(自身を除く): 39105840

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 53, 78, 104, 106, 156, 159, 208, 212, 312, 318, 424, 624, 636, 643, 689, 848, 1272, 1286, 1378, 1929, 2067, 2544, 2572, 2756, 3858, 4134, 5144, 5512, 7716, 8268, 8359, 10288, 11024, 15432, 16536, 16718, 25077, 30864, 33072, 33436, 34079, 50154, 66872, 68158, 100308, 102237, 133744, 136316, 200616, 204474, 272632, 401232, 408948, 443027, 545264, 817896, 886054, 1329081, 1635792, 1772108, 2658162, 3544216, 5316324, 7088432, 10632648, 21265296]

約数ペア:

[(1, 21265296), (2, 10632648), (3, 7088432), (4, 5316324), (6, 3544216), (8, 2658162), (12, 1772108), (13, 1635792), (16, 1329081), (24, 886054), (26, 817896), (39, 545264), (48, 443027), (52, 408948), (53, 401232), (78, 272632), (104, 204474), (106, 200616), (156, 136316), (159, 133744), (208, 102237), (212, 100308), (312, 68158), (318, 66872), (424, 50154), (624, 34079), (636, 33436), (643, 33072), (689, 30864), (848, 25077), (1272, 16718), (1286, 16536), (1378, 15432), (1929, 11024), (2067, 10288), (2544, 8359), (2572, 8268), (2756, 7716), (3858, 5512), (4134, 5144)]