21830340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51977}}^1$

素因数の和:51996

約数の個数: 48

約数和(自身を含む): 69858432

約数和(自身を除く): 48028092

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, 51977, 103954, 155931, 207908, 259885, 311862, 363839, 519770, 623724, 727678, 779655, 1039540, 1091517, 1455356, 1559310, 1819195, 2183034, 3118620, 3638390, 4366068, 5457585, 7276780, 10915170, 21830340]

約数ペア:

[(1, 21830340), (2, 10915170), (3, 7276780), (4, 5457585), (5, 4366068), (6, 3638390), (7, 3118620), (10, 2183034), (12, 1819195), (14, 1559310), (15, 1455356), (20, 1091517), (21, 1039540), (28, 779655), (30, 727678), (35, 623724), (42, 519770), (60, 363839), (70, 311862), (84, 259885), (105, 207908), (140, 155931), (210, 103954), (420, 51977)]