20822900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{197}}^1$

素因数の和:369

約数の個数: 72

約数和(自身を含む): 52246656

約数和(自身を除く): 31423756

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 151, 175, 197, 302, 350, 394, 604, 700, 755, 788, 985, 1057, 1379, 1510, 1970, 2114, 2758, 3020, 3775, 3940, 4228, 4925, 5285, 5516, 6895, 7550, 9850, 10570, 13790, 15100, 19700, 21140, 26425, 27580, 29747, 34475, 52850, 59494, 68950, 105700, 118988, 137900, 148735, 208229, 297470, 416458, 594940, 743675, 832916, 1041145, 1487350, 2082290, 2974700, 4164580, 5205725, 10411450, 20822900]

約数ペア:

[(1, 20822900), (2, 10411450), (4, 5205725), (5, 4164580), (7, 2974700), (10, 2082290), (14, 1487350), (20, 1041145), (25, 832916), (28, 743675), (35, 594940), (50, 416458), (70, 297470), (100, 208229), (140, 148735), (151, 137900), (175, 118988), (197, 105700), (302, 68950), (350, 59494), (394, 52850), (604, 34475), (700, 29747), (755, 27580), (788, 26425), (985, 21140), (1057, 19700), (1379, 15100), (1510, 13790), (1970, 10570), (2114, 9850), (2758, 7550), (3020, 6895), (3775, 5516), (3940, 5285), (4228, 4925)]