21800052

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{199}}^1$

素因数の和:405

約数の個数: 72

約数和(自身を含む): 58968000

約数和(自身を除く): 37167948

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 102, 153, 179, 199, 204, 306, 358, 398, 537, 597, 612, 716, 796, 1074, 1194, 1611, 1791, 2148, 2388, 3043, 3222, 3383, 3582, 6086, 6444, 6766, 7164, 9129, 10149, 12172, 13532, 18258, 20298, 27387, 30447, 35621, 36516, 40596, 54774, 60894, 71242, 106863, 109548, 121788, 142484, 213726, 320589, 427452, 605557, 641178, 1211114, 1282356, 1816671, 2422228, 3633342, 5450013, 7266684, 10900026, 21800052]

約数ペア:

[(1, 21800052), (2, 10900026), (3, 7266684), (4, 5450013), (6, 3633342), (9, 2422228), (12, 1816671), (17, 1282356), (18, 1211114), (34, 641178), (36, 605557), (51, 427452), (68, 320589), (102, 213726), (153, 142484), (179, 121788), (199, 109548), (204, 106863), (306, 71242), (358, 60894), (398, 54774), (537, 40596), (597, 36516), (612, 35621), (716, 30447), (796, 27387), (1074, 20298), (1194, 18258), (1611, 13532), (1791, 12172), (2148, 10149), (2388, 9129), (3043, 7164), (3222, 6766), (3383, 6444), (3582, 6086)]