256242870

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{991}}^1$

素因数の和:1047

約数の個数: 144

約数和(自身を含む): 764629632

約数和(自身を除く): 508386762

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 17, 18, 26, 30, 34, 39, 45, 51, 65, 78, 85, 90, 102, 117, 130, 153, 169, 170, 195, 221, 234, 255, 306, 338, 390, 442, 507, 510, 585, 663, 765, 845, 991, 1014, 1105, 1170, 1326, 1521, 1530, 1690, 1982, 1989, 2210, 2535, 2873, 2973, 3042, 3315, 3978, 4955, 5070, 5746, 5946, 6630, 7605, 8619, 8919, 9910, 9945, 12883, 14365, 14865, 15210, 16847, 17238, 17838, 19890, 25766, 25857, 28730, 29730, 33694, 38649, 43095, 44595, 50541, 51714, 64415, 77298, 84235, 86190, 89190, 101082, 115947, 128830, 129285, 151623, 167479, 168470, 193245, 219011, 231894, 252705, 258570, 303246, 334958, 386490, 438022, 502437, 505410, 579735, 657033, 758115, 837395, 1004874, 1095055, 1159470, 1314066, 1507311, 1516230, 1674790, 1971099, 2190110, 2512185, 2847143, 3014622, 3285165, 3942198, 5024370, 5694286, 6570330, 7536555, 8541429, 9855495, 14235715, 15073110, 17082858, 19710990, 25624287, 28471430, 42707145, 51248574, 85414290, 128121435, 256242870]

約数ペア:

[(1, 256242870), (2, 128121435), (3, 85414290), (5, 51248574), (6, 42707145), (9, 28471430), (10, 25624287), (13, 19710990), (15, 17082858), (17, 15073110), (18, 14235715), (26, 9855495), (30, 8541429), (34, 7536555), (39, 6570330), (45, 5694286), (51, 5024370), (65, 3942198), (78, 3285165), (85, 3014622), (90, 2847143), (102, 2512185), (117, 2190110), (130, 1971099), (153, 1674790), (169, 1516230), (170, 1507311), (195, 1314066), (221, 1159470), (234, 1095055), (255, 1004874), (306, 837395), (338, 758115), (390, 657033), (442, 579735), (507, 505410), (510, 502437), (585, 438022), (663, 386490), (765, 334958), (845, 303246), (991, 258570), (1014, 252705), (1105, 231894), (1170, 219011), (1326, 193245), (1521, 168470), (1530, 167479), (1690, 151623), (1982, 129285), (1989, 128830), (2210, 115947), (2535, 101082), (2873, 89190), (2973, 86190), (3042, 84235), (3315, 77298), (3978, 64415), (4955, 51714), (5070, 50541), (5746, 44595), (5946, 43095), (6630, 38649), (7605, 33694), (8619, 29730), (8919, 28730), (9910, 25857), (9945, 25766), (12883, 19890), (14365, 17838), (14865, 17238), (15210, 16847)]