219660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{523}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 704256

約数和(自身を除く): 484596

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, 523, 1046, 1569, 2092, 2615, 3138, 3661, 5230, 6276, 7322, 7845, 10460, 10983, 14644, 15690, 18305, 21966, 31380, 36610, 43932, 54915, 73220, 109830, 219660]

約数ペア:

[(1, 219660), (2, 109830), (3, 73220), (4, 54915), (5, 43932), (6, 36610), (7, 31380), (10, 21966), (12, 18305), (14, 15690), (15, 14644), (20, 10983), (21, 10460), (28, 7845), (30, 7322), (35, 6276), (42, 5230), (60, 3661), (70, 3138), (84, 2615), (105, 2092), (140, 1569), (210, 1046), (420, 523)]