20856204

素因数分解:

$2^2\times 3^5\times {\mathrm{43}}^1\times {\mathrm{499}}^1$

素因数の和:561

約数の個数: 72

約数和(自身を含む): 56056000

約数和(自身を除く): 35199796

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 43, 54, 81, 86, 108, 129, 162, 172, 243, 258, 324, 387, 486, 499, 516, 774, 972, 998, 1161, 1497, 1548, 1996, 2322, 2994, 3483, 4491, 4644, 5988, 6966, 8982, 10449, 13473, 13932, 17964, 20898, 21457, 26946, 40419, 41796, 42914, 53892, 64371, 80838, 85828, 121257, 128742, 161676, 193113, 242514, 257484, 386226, 485028, 579339, 772452, 1158678, 1738017, 2317356, 3476034, 5214051, 6952068, 10428102, 20856204]

約数ペア:

[(1, 20856204), (2, 10428102), (3, 6952068), (4, 5214051), (6, 3476034), (9, 2317356), (12, 1738017), (18, 1158678), (27, 772452), (36, 579339), (43, 485028), (54, 386226), (81, 257484), (86, 242514), (108, 193113), (129, 161676), (162, 128742), (172, 121257), (243, 85828), (258, 80838), (324, 64371), (387, 53892), (486, 42914), (499, 41796), (516, 40419), (774, 26946), (972, 21457), (998, 20898), (1161, 17964), (1497, 13932), (1548, 13473), (1996, 10449), (2322, 8982), (2994, 6966), (3483, 5988), (4491, 4644)]