164400980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{1277}}^1$

素因数の和:1484

約数の個数: 48

約数和(自身を含む): 356193936

約数和(自身を除く): 191792956

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 157, 164, 205, 314, 410, 628, 785, 820, 1277, 1570, 2554, 3140, 5108, 6385, 6437, 12770, 12874, 25540, 25748, 32185, 52357, 64370, 104714, 128740, 200489, 209428, 261785, 400978, 523570, 801956, 1002445, 1047140, 2004890, 4009780, 8220049, 16440098, 32880196, 41100245, 82200490, 164400980]

約数ペア:

[(1, 164400980), (2, 82200490), (4, 41100245), (5, 32880196), (10, 16440098), (20, 8220049), (41, 4009780), (82, 2004890), (157, 1047140), (164, 1002445), (205, 801956), (314, 523570), (410, 400978), (628, 261785), (785, 209428), (820, 200489), (1277, 128740), (1570, 104714), (2554, 64370), (3140, 52357), (5108, 32185), (6385, 25748), (6437, 25540), (12770, 12874)]