20551660

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:474

約数の個数: 48

約数和(自身を含む): 44960832

約数和(自身を除く): 24409172

約数列:

[1, 2, 4, 5, 10, 20, 41, 71, 82, 142, 164, 205, 284, 353, 355, 410, 706, 710, 820, 1412, 1420, 1765, 2911, 3530, 5822, 7060, 11644, 14473, 14555, 25063, 28946, 29110, 50126, 57892, 58220, 72365, 100252, 125315, 144730, 250630, 289460, 501260, 1027583, 2055166, 4110332, 5137915, 10275830, 20551660]

約数ペア:

[(1, 20551660), (2, 10275830), (4, 5137915), (5, 4110332), (10, 2055166), (20, 1027583), (41, 501260), (71, 289460), (82, 250630), (142, 144730), (164, 125315), (205, 100252), (284, 72365), (353, 58220), (355, 57892), (410, 50126), (706, 29110), (710, 28946), (820, 25063), (1412, 14555), (1420, 14473), (1765, 11644), (2911, 7060), (3530, 5822)]