21762280

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{6113}}^1$

素因数の和:6213

約数の個数: 32

約数和(自身を含む): 49523400

約数和(自身を除く): 27761120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 6113, 12226, 24452, 30565, 48904, 61130, 122260, 244520, 544057, 1088114, 2176228, 2720285, 4352456, 5440570, 10881140, 21762280]

約数ペア:

[(1, 21762280), (2, 10881140), (4, 5440570), (5, 4352456), (8, 2720285), (10, 2176228), (20, 1088114), (40, 544057), (89, 244520), (178, 122260), (356, 61130), (445, 48904), (712, 30565), (890, 24452), (1780, 12226), (3560, 6113)]