21423536

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{997}}^1$

素因数の和:1101

約数の個数: 40

約数和(自身を含む): 44550720

約数和(自身を除く): 23127184

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 79, 136, 158, 272, 316, 632, 997, 1264, 1343, 1994, 2686, 3988, 5372, 7976, 10744, 15952, 16949, 21488, 33898, 67796, 78763, 135592, 157526, 271184, 315052, 630104, 1260208, 1338971, 2677942, 5355884, 10711768, 21423536]

約数ペア:

[(1, 21423536), (2, 10711768), (4, 5355884), (8, 2677942), (16, 1338971), (17, 1260208), (34, 630104), (68, 315052), (79, 271184), (136, 157526), (158, 135592), (272, 78763), (316, 67796), (632, 33898), (997, 21488), (1264, 16949), (1343, 15952), (1994, 10744), (2686, 7976), (3988, 5372)]