21154035

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1693}}^1$

素因数の和:1732

約数の個数: 48

約数和(自身を含む): 41713056

約数和(自身を除く): 20559021

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 49, 51, 85, 105, 119, 147, 245, 255, 357, 595, 735, 833, 1693, 1785, 2499, 4165, 5079, 8465, 11851, 12495, 25395, 28781, 35553, 59255, 82957, 86343, 143905, 177765, 201467, 248871, 414785, 431715, 604401, 1007335, 1244355, 1410269, 3022005, 4230807, 7051345, 21154035]

約数ペア:

[(1, 21154035), (3, 7051345), (5, 4230807), (7, 3022005), (15, 1410269), (17, 1244355), (21, 1007335), (35, 604401), (49, 431715), (51, 414785), (85, 248871), (105, 201467), (119, 177765), (147, 143905), (245, 86343), (255, 82957), (357, 59255), (595, 35553), (735, 28781), (833, 25395), (1693, 12495), (1785, 11851), (2499, 8465), (4165, 5079)]