21940443

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4003}}^1$

素因数の和:4048

約数の個数: 32

約数和(自身を含む): 38438400

約数和(自身を除く): 16497957

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 189, 203, 261, 609, 783, 1827, 4003, 5481, 12009, 28021, 36027, 84063, 108081, 116087, 252189, 348261, 756567, 812609, 1044783, 2437827, 3134349, 7313481, 21940443]

約数ペア:

[(1, 21940443), (3, 7313481), (7, 3134349), (9, 2437827), (21, 1044783), (27, 812609), (29, 756567), (63, 348261), (87, 252189), (189, 116087), (203, 108081), (261, 84063), (609, 36027), (783, 28021), (1827, 12009), (4003, 5481)]