18788340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{16481}}^1$

素因数の和:16512

約数の個数: 48

約数和(自身を含む): 55379520

約数和(自身を除く): 36591180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140, 16481, 32962, 49443, 65924, 82405, 98886, 164810, 197772, 247215, 313139, 329620, 494430, 626278, 939417, 988860, 1252556, 1565695, 1878834, 3131390, 3757668, 4697085, 6262780, 9394170, 18788340]

約数ペア:

[(1, 18788340), (2, 9394170), (3, 6262780), (4, 4697085), (5, 3757668), (6, 3131390), (10, 1878834), (12, 1565695), (15, 1252556), (19, 988860), (20, 939417), (30, 626278), (38, 494430), (57, 329620), (60, 313139), (76, 247215), (95, 197772), (114, 164810), (190, 98886), (228, 82405), (285, 65924), (380, 49443), (570, 32962), (1140, 16481)]