78061880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{7901}}^1$

素因数の和:7944

約数の個数: 64

約数和(自身を含む): 199130400

約数和(自身を除く): 121068520

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 4940, 7901, 9880, 15802, 31604, 39505, 63208, 79010, 102713, 150119, 158020, 205426, 300238, 316040, 410852, 513565, 600476, 750595, 821704, 1027130, 1200952, 1501190, 1951547, 2054260, 3002380, 3903094, 4108520, 6004760, 7806188, 9757735, 15612376, 19515470, 39030940, 78061880]

約数ペア:

[(1, 78061880), (2, 39030940), (4, 19515470), (5, 15612376), (8, 9757735), (10, 7806188), (13, 6004760), (19, 4108520), (20, 3903094), (26, 3002380), (38, 2054260), (40, 1951547), (52, 1501190), (65, 1200952), (76, 1027130), (95, 821704), (104, 750595), (130, 600476), (152, 513565), (190, 410852), (247, 316040), (260, 300238), (380, 205426), (494, 158020), (520, 150119), (760, 102713), (988, 79010), (1235, 63208), (1976, 39505), (2470, 31604), (4940, 15802), (7901, 9880)]