402280

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:213

約数の個数: 32

約数和(自身を含む): 923400

約数和(自身を除く): 521120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 113, 178, 226, 356, 445, 452, 565, 712, 890, 904, 1130, 1780, 2260, 3560, 4520, 10057, 20114, 40228, 50285, 80456, 100570, 201140, 402280]

約数ペア:

[(1, 402280), (2, 201140), (4, 100570), (5, 80456), (8, 50285), (10, 40228), (20, 20114), (40, 10057), (89, 4520), (113, 3560), (178, 2260), (226, 1780), (356, 1130), (445, 904), (452, 890), (565, 712)]