21001575

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{367}}^1$

素因数の和:496

約数の個数: 48

約数和(自身を含む): 40156160

約数和(自身を除く): 19154585

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 109, 175, 327, 367, 525, 545, 763, 1101, 1635, 1835, 2289, 2569, 2725, 3815, 5505, 7707, 8175, 9175, 11445, 12845, 19075, 27525, 38535, 40003, 57225, 64225, 120009, 192675, 200015, 280021, 600045, 840063, 1000075, 1400105, 3000225, 4200315, 7000525, 21001575]

約数ペア:

[(1, 21001575), (3, 7000525), (5, 4200315), (7, 3000225), (15, 1400105), (21, 1000075), (25, 840063), (35, 600045), (75, 280021), (105, 200015), (109, 192675), (175, 120009), (327, 64225), (367, 57225), (525, 40003), (545, 38535), (763, 27525), (1101, 19075), (1635, 12845), (1835, 11445), (2289, 9175), (2569, 8175), (2725, 7707), (3815, 5505)]