20417790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{233}}^1$

素因数の和:393

約数の個数: 64

約数和(自身を含む): 51757056

約数和(自身を除く): 31339266

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 127, 138, 230, 233, 254, 345, 381, 466, 635, 690, 699, 762, 1165, 1270, 1398, 1905, 2330, 2921, 3495, 3810, 5359, 5842, 6990, 8763, 10718, 14605, 16077, 17526, 26795, 29210, 29591, 32154, 43815, 53590, 59182, 80385, 87630, 88773, 147955, 160770, 177546, 295910, 443865, 680593, 887730, 1361186, 2041779, 3402965, 4083558, 6805930, 10208895, 20417790]

約数ペア:

[(1, 20417790), (2, 10208895), (3, 6805930), (5, 4083558), (6, 3402965), (10, 2041779), (15, 1361186), (23, 887730), (30, 680593), (46, 443865), (69, 295910), (115, 177546), (127, 160770), (138, 147955), (230, 88773), (233, 87630), (254, 80385), (345, 59182), (381, 53590), (466, 43815), (635, 32154), (690, 29591), (699, 29210), (762, 26795), (1165, 17526), (1270, 16077), (1398, 14605), (1905, 10718), (2330, 8763), (2921, 6990), (3495, 5842), (3810, 5359)]