21420876

素因数分解:

$2^2\times 3^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{647}}^1$

素因数の和:774

約数の個数: 48

約数和(自身を含む): 52254720

約数和(自身を除く): 30833844

約数列:

[1, 2, 3, 4, 6, 12, 31, 62, 89, 93, 124, 178, 186, 267, 356, 372, 534, 647, 1068, 1294, 1941, 2588, 2759, 3882, 5518, 7764, 8277, 11036, 16554, 20057, 33108, 40114, 57583, 60171, 80228, 115166, 120342, 172749, 230332, 240684, 345498, 690996, 1785073, 3570146, 5355219, 7140292, 10710438, 21420876]

約数ペア:

[(1, 21420876), (2, 10710438), (3, 7140292), (4, 5355219), (6, 3570146), (12, 1785073), (31, 690996), (62, 345498), (89, 240684), (93, 230332), (124, 172749), (178, 120342), (186, 115166), (267, 80228), (356, 60171), (372, 57583), (534, 40114), (647, 33108), (1068, 20057), (1294, 16554), (1941, 11036), (2588, 8277), (2759, 7764), (3882, 5518)]