20453800

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{3299}}^1$

素因数の和:3346

約数の個数: 48

約数和(自身を含む): 49104000

約数和(自身を除く): 28650200

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, 3299, 6200, 6598, 13196, 16495, 26392, 32990, 65980, 82475, 102269, 131960, 164950, 204538, 329900, 409076, 511345, 659800, 818152, 1022690, 2045380, 2556725, 4090760, 5113450, 10226900, 20453800]

約数ペア:

[(1, 20453800), (2, 10226900), (4, 5113450), (5, 4090760), (8, 2556725), (10, 2045380), (20, 1022690), (25, 818152), (31, 659800), (40, 511345), (50, 409076), (62, 329900), (100, 204538), (124, 164950), (155, 131960), (200, 102269), (248, 82475), (310, 65980), (620, 32990), (775, 26392), (1240, 16495), (1550, 13196), (3100, 6598), (3299, 6200)]