257894447920

素因数分解:

$2^4\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1663}}^1\times {\mathrm{7723}}^1$

素因数の和:9650

約数の個数: 80

約数和(自身を含む): 602433441792

約数和(自身を除く): 344538993872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251, 502, 1004, 1255, 1663, 2008, 2510, 3326, 4016, 5020, 6652, 7723, 8315, 10040, 13304, 15446, 16630, 20080, 26608, 30892, 33260, 38615, 61784, 66520, 77230, 123568, 133040, 154460, 308920, 417413, 617840, 834826, 1669652, 1938473, 2087065, 3339304, 3876946, 4174130, 6678608, 7753892, 8348260, 9692365, 12843349, 15507784, 16696520, 19384730, 25686698, 31015568, 33393040, 38769460, 51373396, 64216745, 77538920, 102746792, 128433490, 155077840, 205493584, 256866980, 513733960, 1027467920, 3223680599, 6447361198, 12894722396, 16118402995, 25789444792, 32236805990, 51578889584, 64473611980, 128947223960, 257894447920]

約数ペア:

[(1, 257894447920), (2, 128947223960), (4, 64473611980), (5, 51578889584), (8, 32236805990), (10, 25789444792), (16, 16118402995), (20, 12894722396), (40, 6447361198), (80, 3223680599), (251, 1027467920), (502, 513733960), (1004, 256866980), (1255, 205493584), (1663, 155077840), (2008, 128433490), (2510, 102746792), (3326, 77538920), (4016, 64216745), (5020, 51373396), (6652, 38769460), (7723, 33393040), (8315, 31015568), (10040, 25686698), (13304, 19384730), (15446, 16696520), (16630, 15507784), (20080, 12843349), (26608, 9692365), (30892, 8348260), (33260, 7753892), (38615, 6678608), (61784, 4174130), (66520, 3876946), (77230, 3339304), (123568, 2087065), (133040, 1938473), (154460, 1669652), (308920, 834826), (417413, 617840)]