9991100

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{2039}}^1$

素因数の和:2067

約数の個数: 54

約数和(自身を含む): 25232760

約数和(自身を除く): 15241660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2039, 2450, 4078, 4900, 8156, 10195, 14273, 20390, 28546, 40780, 50975, 57092, 71365, 99911, 101950, 142730, 199822, 203900, 285460, 356825, 399644, 499555, 713650, 999110, 1427300, 1998220, 2497775, 4995550, 9991100]

約数ペア:

[(1, 9991100), (2, 4995550), (4, 2497775), (5, 1998220), (7, 1427300), (10, 999110), (14, 713650), (20, 499555), (25, 399644), (28, 356825), (35, 285460), (49, 203900), (50, 199822), (70, 142730), (98, 101950), (100, 99911), (140, 71365), (175, 57092), (196, 50975), (245, 40780), (350, 28546), (490, 20390), (700, 14273), (980, 10195), (1225, 8156), (2039, 4900), (2450, 4078)]