389699720

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{2707}}^1$

素因数の和:2838

約数の個数: 64

約数和(自身を含む): 906638400

約数和(自身を除く): 516938680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 61, 118, 122, 236, 244, 295, 305, 472, 488, 590, 610, 1180, 1220, 2360, 2440, 2707, 3599, 5414, 7198, 10828, 13535, 14396, 17995, 21656, 27070, 28792, 35990, 54140, 71980, 108280, 143960, 159713, 165127, 319426, 330254, 638852, 660508, 798565, 825635, 1277704, 1321016, 1597130, 1651270, 3194260, 3302540, 6388520, 6605080, 9742493, 19484986, 38969972, 48712465, 77939944, 97424930, 194849860, 389699720]

約数ペア:

[(1, 389699720), (2, 194849860), (4, 97424930), (5, 77939944), (8, 48712465), (10, 38969972), (20, 19484986), (40, 9742493), (59, 6605080), (61, 6388520), (118, 3302540), (122, 3194260), (236, 1651270), (244, 1597130), (295, 1321016), (305, 1277704), (472, 825635), (488, 798565), (590, 660508), (610, 638852), (1180, 330254), (1220, 319426), (2360, 165127), (2440, 159713), (2707, 143960), (3599, 108280), (5414, 71980), (7198, 54140), (10828, 35990), (13535, 28792), (14396, 27070), (17995, 21656)]