20897940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49757}}^1$

素因数の和:49776

約数の個数: 48

約数和(自身を含む): 66874752

約数和(自身を除く): 45976812

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, 49757, 99514, 149271, 199028, 248785, 298542, 348299, 497570, 597084, 696598, 746355, 995140, 1044897, 1393196, 1492710, 1741495, 2089794, 2985420, 3482990, 4179588, 5224485, 6965980, 10448970, 20897940]

約数ペア:

[(1, 20897940), (2, 10448970), (3, 6965980), (4, 5224485), (5, 4179588), (6, 3482990), (7, 2985420), (10, 2089794), (12, 1741495), (14, 1492710), (15, 1393196), (20, 1044897), (21, 995140), (28, 746355), (30, 696598), (35, 597084), (42, 497570), (60, 348299), (70, 298542), (84, 248785), (105, 199028), (140, 149271), (210, 99514), (420, 49757)]