21976185

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{359}}^1$

素因数の和:438

約数の個数: 64

約数和(自身を含む): 44789760

約数和(自身を除く): 22813575

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 53, 55, 77, 105, 159, 165, 231, 265, 359, 371, 385, 583, 795, 1077, 1113, 1155, 1749, 1795, 1855, 2513, 2915, 3949, 4081, 5385, 5565, 7539, 8745, 11847, 12243, 12565, 19027, 19745, 20405, 27643, 37695, 57081, 59235, 61215, 82929, 95135, 133189, 138215, 209297, 285405, 399567, 414645, 627891, 665945, 1046485, 1465079, 1997835, 3139455, 4395237, 7325395, 21976185]

約数ペア:

[(1, 21976185), (3, 7325395), (5, 4395237), (7, 3139455), (11, 1997835), (15, 1465079), (21, 1046485), (33, 665945), (35, 627891), (53, 414645), (55, 399567), (77, 285405), (105, 209297), (159, 138215), (165, 133189), (231, 95135), (265, 82929), (359, 61215), (371, 59235), (385, 57081), (583, 37695), (795, 27643), (1077, 20405), (1113, 19745), (1155, 19027), (1749, 12565), (1795, 12243), (1855, 11847), (2513, 8745), (2915, 7539), (3949, 5565), (4081, 5385)]