20423440

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4327}}^1$

素因数の和:4399

約数の個数: 40

約数和(自身を含む): 48300480

約数和(自身を除く): 27877040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4327, 4720, 8654, 17308, 21635, 34616, 43270, 69232, 86540, 173080, 255293, 346160, 510586, 1021172, 1276465, 2042344, 2552930, 4084688, 5105860, 10211720, 20423440]

約数ペア:

[(1, 20423440), (2, 10211720), (4, 5105860), (5, 4084688), (8, 2552930), (10, 2042344), (16, 1276465), (20, 1021172), (40, 510586), (59, 346160), (80, 255293), (118, 173080), (236, 86540), (295, 69232), (472, 43270), (590, 34616), (944, 21635), (1180, 17308), (2360, 8654), (4327, 4720)]