399048520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{1933}}^1$

素因数の和:2354

約数の個数: 64

約数和(自身を含む): 969862320

約数和(自身を除く): 570813800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 397, 520, 794, 1588, 1933, 1985, 3176, 3866, 3970, 5161, 7732, 7940, 9665, 10322, 15464, 15880, 19330, 20644, 25129, 25805, 38660, 41288, 50258, 51610, 77320, 100516, 103220, 125645, 201032, 206440, 251290, 502580, 767401, 1005160, 1534802, 3069604, 3837005, 6139208, 7674010, 9976213, 15348020, 19952426, 30696040, 39904852, 49881065, 79809704, 99762130, 199524260, 399048520]

約数ペア:

[(1, 399048520), (2, 199524260), (4, 99762130), (5, 79809704), (8, 49881065), (10, 39904852), (13, 30696040), (20, 19952426), (26, 15348020), (40, 9976213), (52, 7674010), (65, 6139208), (104, 3837005), (130, 3069604), (260, 1534802), (397, 1005160), (520, 767401), (794, 502580), (1588, 251290), (1933, 206440), (1985, 201032), (3176, 125645), (3866, 103220), (3970, 100516), (5161, 77320), (7732, 51610), (7940, 50258), (9665, 41288), (10322, 38660), (15464, 25805), (15880, 25129), (19330, 20644)]