20664420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49201}}^1$

素因数の和:49220

約数の個数: 48

約数和(自身を含む): 66127488

約数和(自身を除く): 45463068

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49201, 98402, 147603, 196804, 246005, 295206, 344407, 492010, 590412, 688814, 738015, 984020, 1033221, 1377628, 1476030, 1722035, 2066442, 2952060, 3444070, 4132884, 5166105, 6888140, 10332210, 20664420]

約数ペア:

[(1, 20664420), (2, 10332210), (3, 6888140), (4, 5166105), (5, 4132884), (6, 3444070), (7, 2952060), (10, 2066442), (12, 1722035), (14, 1476030), (15, 1377628), (20, 1033221), (21, 984020), (28, 738015), (30, 688814), (35, 590412), (42, 492010), (60, 344407), (70, 295206), (84, 246005), (105, 196804), (140, 147603), (210, 98402), (420, 49201)]