21729195

素因数分解:

$3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2267}}^1$

素因数の和:2352

約数の個数: 32

約数和(自身を含む): 39191040

約数和(自身を除く): 17461845

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 135, 213, 355, 639, 1065, 1917, 2267, 3195, 6801, 9585, 11335, 20403, 34005, 61209, 102015, 160957, 306045, 482871, 804785, 1448613, 2414355, 4345839, 7243065, 21729195]

約数ペア:

[(1, 21729195), (3, 7243065), (5, 4345839), (9, 2414355), (15, 1448613), (27, 804785), (45, 482871), (71, 306045), (135, 160957), (213, 102015), (355, 61209), (639, 34005), (1065, 20403), (1917, 11335), (2267, 9585), (3195, 6801)]