12721000

素因数分解:

$2^3\times 5^3\times {\mathrm{12721}}^1$

素因数の和:12742

約数の個数: 32

約数和(自身を含む): 29769480

約数和(自身を除く): 17048480

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 12721, 25442, 50884, 63605, 101768, 127210, 254420, 318025, 508840, 636050, 1272100, 1590125, 2544200, 3180250, 6360500, 12721000]

約数ペア:

[(1, 12721000), (2, 6360500), (4, 3180250), (5, 2544200), (8, 1590125), (10, 1272100), (20, 636050), (25, 508840), (40, 318025), (50, 254420), (100, 127210), (125, 101768), (200, 63605), (250, 50884), (500, 25442), (1000, 12721)]