138404120

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{433}}^1$

素因数の和:636

約数の個数: 64

約数和(自身を含む): 319667040

約数和(自身を除く): 181262920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 131, 244, 262, 305, 433, 488, 524, 610, 655, 866, 1048, 1220, 1310, 1732, 2165, 2440, 2620, 3464, 4330, 5240, 7991, 8660, 15982, 17320, 26413, 31964, 39955, 52826, 56723, 63928, 79910, 105652, 113446, 132065, 159820, 211304, 226892, 264130, 283615, 319640, 453784, 528260, 567230, 1056520, 1134460, 2268920, 3460103, 6920206, 13840412, 17300515, 27680824, 34601030, 69202060, 138404120]

約数ペア:

[(1, 138404120), (2, 69202060), (4, 34601030), (5, 27680824), (8, 17300515), (10, 13840412), (20, 6920206), (40, 3460103), (61, 2268920), (122, 1134460), (131, 1056520), (244, 567230), (262, 528260), (305, 453784), (433, 319640), (488, 283615), (524, 264130), (610, 226892), (655, 211304), (866, 159820), (1048, 132065), (1220, 113446), (1310, 105652), (1732, 79910), (2165, 63928), (2440, 56723), (2620, 52826), (3464, 39955), (4330, 31964), (5240, 26413), (7991, 17320), (8660, 15982)]