21581252

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1709}}^1$

素因数の和:1772

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 26681788

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 41, 44, 77, 82, 154, 164, 287, 308, 451, 574, 902, 1148, 1709, 1804, 3157, 3418, 6314, 6836, 11963, 12628, 18799, 23926, 37598, 47852, 70069, 75196, 131593, 140138, 263186, 280276, 490483, 526372, 770759, 980966, 1541518, 1961932, 3083036, 5395313, 10790626, 21581252]

約数ペア:

[(1, 21581252), (2, 10790626), (4, 5395313), (7, 3083036), (11, 1961932), (14, 1541518), (22, 980966), (28, 770759), (41, 526372), (44, 490483), (77, 280276), (82, 263186), (154, 140138), (164, 131593), (287, 75196), (308, 70069), (451, 47852), (574, 37598), (902, 23926), (1148, 18799), (1709, 12628), (1804, 11963), (3157, 6836), (3418, 6314)]