18789027831

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{401}}^1\times {\mathrm{20101}}^1$

素因数の和:20552

約数の個数: 48

約数和(自身を含む): 31936127808

約数和(自身を除く): 13147099977

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 401, 777, 1203, 2331, 2807, 3609, 8421, 14837, 20101, 25263, 44511, 60303, 103859, 133533, 140707, 180909, 311577, 422121, 743737, 934731, 1266363, 2231211, 5206159, 6693633, 8060501, 15618477, 24181503, 46855431, 56423507, 72544509, 169270521, 298238537, 507811563, 894715611, 2087669759, 2684146833, 6263009277, 18789027831]

約数ペア:

[(1, 18789027831), (3, 6263009277), (7, 2684146833), (9, 2087669759), (21, 894715611), (37, 507811563), (63, 298238537), (111, 169270521), (259, 72544509), (333, 56423507), (401, 46855431), (777, 24181503), (1203, 15618477), (2331, 8060501), (2807, 6693633), (3609, 5206159), (8421, 2231211), (14837, 1266363), (20101, 934731), (25263, 743737), (44511, 422121), (60303, 311577), (103859, 180909), (133533, 140707)]