21395768

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{41}}^2\times {\mathrm{43}}^1$

素因数の和:168

約数の個数: 48

約数和(自身を含む): 43212840

約数和(自身を除く): 21817072

約数列:

[1, 2, 4, 8, 37, 41, 43, 74, 82, 86, 148, 164, 172, 296, 328, 344, 1517, 1591, 1681, 1763, 3034, 3182, 3362, 3526, 6068, 6364, 6724, 7052, 12136, 12728, 13448, 14104, 62197, 65231, 72283, 124394, 130462, 144566, 248788, 260924, 289132, 497576, 521848, 578264, 2674471, 5348942, 10697884, 21395768]

約数ペア:

[(1, 21395768), (2, 10697884), (4, 5348942), (8, 2674471), (37, 578264), (41, 521848), (43, 497576), (74, 289132), (82, 260924), (86, 248788), (148, 144566), (164, 130462), (172, 124394), (296, 72283), (328, 65231), (344, 62197), (1517, 14104), (1591, 13448), (1681, 12728), (1763, 12136), (3034, 7052), (3182, 6724), (3362, 6364), (3526, 6068)]