138857420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{2711}}^1$

素因数の和:2930

約数の個数: 48

約数和(自身を含む): 315741888

約数和(自身を除く): 176884468

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 197, 260, 394, 788, 985, 1970, 2561, 2711, 3940, 5122, 5422, 10244, 10844, 12805, 13555, 25610, 27110, 35243, 51220, 54220, 70486, 140972, 176215, 352430, 534067, 704860, 1068134, 2136268, 2670335, 5340670, 6942871, 10681340, 13885742, 27771484, 34714355, 69428710, 138857420]

約数ペア:

[(1, 138857420), (2, 69428710), (4, 34714355), (5, 27771484), (10, 13885742), (13, 10681340), (20, 6942871), (26, 5340670), (52, 2670335), (65, 2136268), (130, 1068134), (197, 704860), (260, 534067), (394, 352430), (788, 176215), (985, 140972), (1970, 70486), (2561, 54220), (2711, 51220), (3940, 35243), (5122, 27110), (5422, 25610), (10244, 13555), (10844, 12805)]