20016780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47659}}^1$

素因数の和:47678

約数の個数: 48

約数和(自身を含む): 64055040

約数和(自身を除く): 44038260

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, 47659, 95318, 142977, 190636, 238295, 285954, 333613, 476590, 571908, 667226, 714885, 953180, 1000839, 1334452, 1429770, 1668065, 2001678, 2859540, 3336130, 4003356, 5004195, 6672260, 10008390, 20016780]

約数ペア:

[(1, 20016780), (2, 10008390), (3, 6672260), (4, 5004195), (5, 4003356), (6, 3336130), (7, 2859540), (10, 2001678), (12, 1668065), (14, 1429770), (15, 1334452), (20, 1000839), (21, 953180), (28, 714885), (30, 667226), (35, 571908), (42, 476590), (60, 333613), (70, 285954), (84, 238295), (105, 190636), (140, 142977), (210, 95318), (420, 47659)]