19940778

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:220

約数の個数: 96

約数和(自身を含む): 51996672

約数和(自身を除く): 32055894

約数列:

[1, 2, 3, 6, 9, 11, 13, 18, 22, 26, 33, 39, 61, 66, 78, 99, 117, 122, 127, 143, 183, 198, 234, 254, 286, 366, 381, 429, 549, 671, 762, 793, 858, 1098, 1143, 1287, 1342, 1397, 1586, 1651, 2013, 2286, 2379, 2574, 2794, 3302, 4026, 4191, 4758, 4953, 6039, 7137, 7747, 8382, 8723, 9906, 12078, 12573, 14274, 14859, 15494, 17446, 18161, 23241, 25146, 26169, 29718, 36322, 46482, 52338, 54483, 69723, 78507, 85217, 100711, 108966, 139446, 157014, 163449, 170434, 201422, 255651, 302133, 326898, 511302, 604266, 766953, 906399, 1107821, 1533906, 1812798, 2215642, 3323463, 6646926, 9970389, 19940778]

約数ペア:

[(1, 19940778), (2, 9970389), (3, 6646926), (6, 3323463), (9, 2215642), (11, 1812798), (13, 1533906), (18, 1107821), (22, 906399), (26, 766953), (33, 604266), (39, 511302), (61, 326898), (66, 302133), (78, 255651), (99, 201422), (117, 170434), (122, 163449), (127, 157014), (143, 139446), (183, 108966), (198, 100711), (234, 85217), (254, 78507), (286, 69723), (366, 54483), (381, 52338), (429, 46482), (549, 36322), (671, 29718), (762, 26169), (793, 25146), (858, 23241), (1098, 18161), (1143, 17446), (1287, 15494), (1342, 14859), (1397, 14274), (1586, 12573), (1651, 12078), (2013, 9906), (2286, 8723), (2379, 8382), (2574, 7747), (2794, 7137), (3302, 6039), (4026, 4953), (4191, 4758)]