20780340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49477}}^1$

素因数の和:49496

約数の個数: 48

約数和(自身を含む): 66498432

約数和(自身を除く): 45718092

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, 49477, 98954, 148431, 197908, 247385, 296862, 346339, 494770, 593724, 692678, 742155, 989540, 1039017, 1385356, 1484310, 1731695, 2078034, 2968620, 3463390, 4156068, 5195085, 6926780, 10390170, 20780340]

約数ペア:

[(1, 20780340), (2, 10390170), (3, 6926780), (4, 5195085), (5, 4156068), (6, 3463390), (7, 2968620), (10, 2078034), (12, 1731695), (14, 1484310), (15, 1385356), (20, 1039017), (21, 989540), (28, 742155), (30, 692678), (35, 593724), (42, 494770), (60, 346339), (70, 296862), (84, 247385), (105, 197908), (140, 148431), (210, 98954), (420, 49477)]