648880240

素因数分解:

$2^4\times 5^1\times {\mathrm{1973}}^1\times {\mathrm{4111}}^1$

素因数の和:6097

約数の個数: 40

約数和(自身を含む): 1509778368

約数和(自身を除く): 860898128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1973, 3946, 4111, 7892, 8222, 9865, 15784, 16444, 19730, 20555, 31568, 32888, 39460, 41110, 65776, 78920, 82220, 157840, 164440, 328880, 8111003, 16222006, 32444012, 40555015, 64888024, 81110030, 129776048, 162220060, 324440120, 648880240]

約数ペア:

[(1, 648880240), (2, 324440120), (4, 162220060), (5, 129776048), (8, 81110030), (10, 64888024), (16, 40555015), (20, 32444012), (40, 16222006), (80, 8111003), (1973, 328880), (3946, 164440), (4111, 157840), (7892, 82220), (8222, 78920), (9865, 65776), (15784, 41110), (16444, 39460), (19730, 32888), (20555, 31568)]