257899168

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{499}}^1\times {\mathrm{521}}^1$

素因数の和:1061

約数の個数: 48

約数和(自身を含む): 526176000

約数和(自身を除く): 268276832

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 124, 248, 496, 499, 521, 992, 998, 1042, 1996, 2084, 3992, 4168, 7984, 8336, 15469, 15968, 16151, 16672, 30938, 32302, 61876, 64604, 123752, 129208, 247504, 258416, 259979, 495008, 516832, 519958, 1039916, 2079832, 4159664, 8059349, 8319328, 16118698, 32237396, 64474792, 128949584, 257899168]

約数ペア:

[(1, 257899168), (2, 128949584), (4, 64474792), (8, 32237396), (16, 16118698), (31, 8319328), (32, 8059349), (62, 4159664), (124, 2079832), (248, 1039916), (496, 519958), (499, 516832), (521, 495008), (992, 259979), (998, 258416), (1042, 247504), (1996, 129208), (2084, 123752), (3992, 64604), (4168, 61876), (7984, 32302), (8336, 30938), (15469, 16672), (15968, 16151)]