221401840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{5851}}^1$

素因数の和:5918

約数の個数: 80

約数和(自身を含む): 574713216

約数和(自身を除く): 353311376

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 43, 44, 55, 80, 86, 88, 110, 172, 176, 215, 220, 344, 430, 440, 473, 688, 860, 880, 946, 1720, 1892, 2365, 3440, 3784, 4730, 5851, 7568, 9460, 11702, 18920, 23404, 29255, 37840, 46808, 58510, 64361, 93616, 117020, 128722, 234040, 251593, 257444, 321805, 468080, 503186, 514888, 643610, 1006372, 1029776, 1257965, 1287220, 2012744, 2515930, 2574440, 2767523, 4025488, 5031860, 5148880, 5535046, 10063720, 11070092, 13837615, 20127440, 22140184, 27675230, 44280368, 55350460, 110700920, 221401840]

約数ペア:

[(1, 221401840), (2, 110700920), (4, 55350460), (5, 44280368), (8, 27675230), (10, 22140184), (11, 20127440), (16, 13837615), (20, 11070092), (22, 10063720), (40, 5535046), (43, 5148880), (44, 5031860), (55, 4025488), (80, 2767523), (86, 2574440), (88, 2515930), (110, 2012744), (172, 1287220), (176, 1257965), (215, 1029776), (220, 1006372), (344, 643610), (430, 514888), (440, 503186), (473, 468080), (688, 321805), (860, 257444), (880, 251593), (946, 234040), (1720, 128722), (1892, 117020), (2365, 93616), (3440, 64361), (3784, 58510), (4730, 46808), (5851, 37840), (7568, 29255), (9460, 23404), (11702, 18920)]