3961880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1$

素因数の和:444

約数の個数: 64

約数和(自身を含む): 10130400

約数和(自身を除く): 6168520

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, 401, 494, 520, 760, 802, 988, 1235, 1604, 1976, 2005, 2470, 3208, 4010, 4940, 5213, 7619, 8020, 9880, 10426, 15238, 16040, 20852, 26065, 30476, 38095, 41704, 52130, 60952, 76190, 99047, 104260, 152380, 198094, 208520, 304760, 396188, 495235, 792376, 990470, 1980940, 3961880]

約数ペア:

[(1, 3961880), (2, 1980940), (4, 990470), (5, 792376), (8, 495235), (10, 396188), (13, 304760), (19, 208520), (20, 198094), (26, 152380), (38, 104260), (40, 99047), (52, 76190), (65, 60952), (76, 52130), (95, 41704), (104, 38095), (130, 30476), (152, 26065), (190, 20852), (247, 16040), (260, 15238), (380, 10426), (401, 9880), (494, 8020), (520, 7619), (760, 5213), (802, 4940), (988, 4010), (1235, 3208), (1604, 2470), (1976, 2005)]