20381756

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 39889920

約数和(自身を除く): 19508164

約数列:

[1, 2, 4, 19, 31, 38, 41, 62, 76, 82, 124, 164, 211, 422, 589, 779, 844, 1178, 1271, 1558, 2356, 2542, 3116, 4009, 5084, 6541, 8018, 8651, 13082, 16036, 17302, 24149, 26164, 34604, 48298, 96596, 124279, 164369, 248558, 268181, 328738, 497116, 536362, 657476, 1072724, 5095439, 10190878, 20381756]

約数ペア:

[(1, 20381756), (2, 10190878), (4, 5095439), (19, 1072724), (31, 657476), (38, 536362), (41, 497116), (62, 328738), (76, 268181), (82, 248558), (124, 164369), (164, 124279), (211, 96596), (422, 48298), (589, 34604), (779, 26164), (844, 24149), (1178, 17302), (1271, 16036), (1558, 13082), (2356, 8651), (2542, 8018), (3116, 6541), (4009, 5084)]