20577800

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{3319}}^1$

素因数の和:3366

約数の個数: 48

約数和(自身を含む): 49401600

約数和(自身を除く): 28823800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 155, 200, 248, 310, 620, 775, 1240, 1550, 3100, 3319, 6200, 6638, 13276, 16595, 26552, 33190, 66380, 82975, 102889, 132760, 165950, 205778, 331900, 411556, 514445, 663800, 823112, 1028890, 2057780, 2572225, 4115560, 5144450, 10288900, 20577800]

約数ペア:

[(1, 20577800), (2, 10288900), (4, 5144450), (5, 4115560), (8, 2572225), (10, 2057780), (20, 1028890), (25, 823112), (31, 663800), (40, 514445), (50, 411556), (62, 331900), (100, 205778), (124, 165950), (155, 132760), (200, 102889), (248, 82975), (310, 66380), (620, 33190), (775, 26552), (1240, 16595), (1550, 13276), (3100, 6638), (3319, 6200)]