19556240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:408

約数の個数: 80

約数和(自身を含む): 50461056

約数和(自身を除く): 30904816

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 71, 80, 88, 110, 142, 176, 220, 284, 313, 355, 440, 568, 626, 710, 781, 880, 1136, 1252, 1420, 1562, 1565, 2504, 2840, 3124, 3130, 3443, 3905, 5008, 5680, 6248, 6260, 6886, 7810, 12496, 12520, 13772, 15620, 17215, 22223, 25040, 27544, 31240, 34430, 44446, 55088, 62480, 68860, 88892, 111115, 137720, 177784, 222230, 244453, 275440, 355568, 444460, 488906, 888920, 977812, 1222265, 1777840, 1955624, 2444530, 3911248, 4889060, 9778120, 19556240]

約数ペア:

[(1, 19556240), (2, 9778120), (4, 4889060), (5, 3911248), (8, 2444530), (10, 1955624), (11, 1777840), (16, 1222265), (20, 977812), (22, 888920), (40, 488906), (44, 444460), (55, 355568), (71, 275440), (80, 244453), (88, 222230), (110, 177784), (142, 137720), (176, 111115), (220, 88892), (284, 68860), (313, 62480), (355, 55088), (440, 44446), (568, 34430), (626, 31240), (710, 27544), (781, 25040), (880, 22223), (1136, 17215), (1252, 15620), (1420, 13772), (1562, 12520), (1565, 12496), (2504, 7810), (2840, 6886), (3124, 6260), (3130, 6248), (3443, 5680), (3905, 5008)]