398464136

素因数分解:

$2^3\times 7^1\times {\mathrm{397}}^1\times {\mathrm{17923}}^1$

素因数の和:18333

約数の個数: 32

約数和(自身を含む): 856050240

約数和(自身を除く): 457586104

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 397, 794, 1588, 2779, 3176, 5558, 11116, 17923, 22232, 35846, 71692, 125461, 143384, 250922, 501844, 1003688, 7115431, 14230862, 28461724, 49808017, 56923448, 99616034, 199232068, 398464136]

約数ペア:

[(1, 398464136), (2, 199232068), (4, 99616034), (7, 56923448), (8, 49808017), (14, 28461724), (28, 14230862), (56, 7115431), (397, 1003688), (794, 501844), (1588, 250922), (2779, 143384), (3176, 125461), (5558, 71692), (11116, 35846), (17923, 22232)]