20438930

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{251}}^1\times {\mathrm{479}}^1$

素因数の和:754

約数の個数: 32

約数和(自身を含む): 39191040

約数和(自身を除く): 18752110

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 251, 479, 502, 958, 1255, 2395, 2510, 4267, 4790, 8143, 8534, 16286, 21335, 40715, 42670, 81430, 120229, 240458, 601145, 1202290, 2043893, 4087786, 10219465, 20438930]

約数ペア:

[(1, 20438930), (2, 10219465), (5, 4087786), (10, 2043893), (17, 1202290), (34, 601145), (85, 240458), (170, 120229), (251, 81430), (479, 42670), (502, 40715), (958, 21335), (1255, 16286), (2395, 8534), (2510, 8143), (4267, 4790)]