399351264

素因数分解:

$2^5\times 3^1\times {\mathrm{13}}^1\times {\mathrm{319993}}^1$

素因数の和:320019

約数の個数: 48

約数和(自身を含む): 1128938832

約数和(自身を除く): 729587568

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 208, 312, 416, 624, 1248, 319993, 639986, 959979, 1279972, 1919958, 2559944, 3839916, 4159909, 5119888, 7679832, 8319818, 10239776, 12479727, 15359664, 16639636, 24959454, 30719328, 33279272, 49918908, 66558544, 99837816, 133117088, 199675632, 399351264]

約数ペア:

[(1, 399351264), (2, 199675632), (3, 133117088), (4, 99837816), (6, 66558544), (8, 49918908), (12, 33279272), (13, 30719328), (16, 24959454), (24, 16639636), (26, 15359664), (32, 12479727), (39, 10239776), (48, 8319818), (52, 7679832), (78, 5119888), (96, 4159909), (104, 3839916), (156, 2559944), (208, 1919958), (312, 1279972), (416, 959979), (624, 639986), (1248, 319993)]