21000929019

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1657}}^1\times {\mathrm{12841}}^1$

素因数の和:14555

約数の個数: 32

約数和(自身を含む): 32704567296

約数和(自身を除く): 11703638277

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 1657, 4971, 11599, 12841, 34797, 38523, 77879, 89887, 233637, 269661, 545153, 603527, 1635459, 1810581, 4224689, 12674067, 21277537, 63832611, 148942759, 446828277, 1000044239, 3000132717, 7000309673, 21000929019]

約数ペア:

[(1, 21000929019), (3, 7000309673), (7, 3000132717), (21, 1000044239), (47, 446828277), (141, 148942759), (329, 63832611), (987, 21277537), (1657, 12674067), (4971, 4224689), (11599, 1810581), (12841, 1635459), (34797, 603527), (38523, 545153), (77879, 269661), (89887, 233637)]