408020804

素因数分解:

$2^2\times {\mathrm{311}}^1\times {\mathrm{431}}^1\times {\mathrm{761}}^1$

素因数の和:1507

約数の個数: 24

約数和(自身を含む): 718937856

約数和(自身を除く): 310917052

約数列:

[1, 2, 4, 311, 431, 622, 761, 862, 1244, 1522, 1724, 3044, 134041, 236671, 268082, 327991, 473342, 536164, 655982, 946684, 1311964, 102005201, 204010402, 408020804]

約数ペア:

[(1, 408020804), (2, 204010402), (4, 102005201), (311, 1311964), (431, 946684), (622, 655982), (761, 536164), (862, 473342), (1244, 327991), (1522, 268082), (1724, 236671), (3044, 134041)]