28040012

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:231

約数の個数: 96

約数和(自身を含む): 67737600

約数和(自身を除く): 39697588

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 47, 52, 77, 91, 94, 143, 149, 154, 182, 188, 286, 298, 308, 329, 364, 517, 572, 596, 611, 658, 1001, 1034, 1043, 1222, 1316, 1639, 1937, 2002, 2068, 2086, 2444, 3278, 3619, 3874, 4004, 4172, 4277, 6556, 6721, 7003, 7238, 7748, 8554, 11473, 13442, 13559, 14006, 14476, 17108, 21307, 22946, 26884, 27118, 28012, 42614, 45892, 47047, 49021, 54236, 77033, 85228, 91039, 94094, 98042, 149149, 154066, 182078, 188188, 196084, 298298, 308132, 364156, 539231, 596596, 637273, 1001429, 1078462, 1274546, 2002858, 2156924, 2549092, 4005716, 7010003, 14020006, 28040012]

約数ペア:

[(1, 28040012), (2, 14020006), (4, 7010003), (7, 4005716), (11, 2549092), (13, 2156924), (14, 2002858), (22, 1274546), (26, 1078462), (28, 1001429), (44, 637273), (47, 596596), (52, 539231), (77, 364156), (91, 308132), (94, 298298), (143, 196084), (149, 188188), (154, 182078), (182, 154066), (188, 149149), (286, 98042), (298, 94094), (308, 91039), (329, 85228), (364, 77033), (517, 54236), (572, 49021), (596, 47047), (611, 45892), (658, 42614), (1001, 28012), (1034, 27118), (1043, 26884), (1222, 22946), (1316, 21307), (1639, 17108), (1937, 14476), (2002, 14006), (2068, 13559), (2086, 13442), (2444, 11473), (3278, 8554), (3619, 7748), (3874, 7238), (4004, 7003), (4172, 6721), (4277, 6556)]