388645964

素因数分解:

$2^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{211}}^1\times {\mathrm{419}}^1$

素因数の和:798

約数の個数: 48

約数和(自身を含む): 787825920

約数和(自身を除く): 399179956

約数列:

[1, 2, 4, 7, 14, 28, 157, 211, 314, 419, 422, 628, 838, 844, 1099, 1477, 1676, 2198, 2933, 2954, 4396, 5866, 5908, 11732, 33127, 65783, 66254, 88409, 131566, 132508, 176818, 231889, 263132, 353636, 460481, 463778, 618863, 920962, 927556, 1237726, 1841924, 2475452, 13880213, 27760426, 55520852, 97161491, 194322982, 388645964]

約数ペア:

[(1, 388645964), (2, 194322982), (4, 97161491), (7, 55520852), (14, 27760426), (28, 13880213), (157, 2475452), (211, 1841924), (314, 1237726), (419, 927556), (422, 920962), (628, 618863), (838, 463778), (844, 460481), (1099, 353636), (1477, 263132), (1676, 231889), (2198, 176818), (2933, 132508), (2954, 131566), (4396, 88409), (5866, 66254), (5908, 65783), (11732, 33127)]