21264516

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{6491}}^1$

素因数の和:6521

約数の個数: 72

約数和(自身を含む): 66166464

約数和(自身を除く): 44901948

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 84, 91, 117, 126, 156, 182, 234, 252, 273, 364, 468, 546, 819, 1092, 1638, 3276, 6491, 12982, 19473, 25964, 38946, 45437, 58419, 77892, 84383, 90874, 116838, 136311, 168766, 181748, 233676, 253149, 272622, 337532, 408933, 506298, 545244, 590681, 759447, 817866, 1012596, 1181362, 1518894, 1635732, 1772043, 2362724, 3037788, 3544086, 5316129, 7088172, 10632258, 21264516]

約数ペア:

[(1, 21264516), (2, 10632258), (3, 7088172), (4, 5316129), (6, 3544086), (7, 3037788), (9, 2362724), (12, 1772043), (13, 1635732), (14, 1518894), (18, 1181362), (21, 1012596), (26, 817866), (28, 759447), (36, 590681), (39, 545244), (42, 506298), (52, 408933), (63, 337532), (78, 272622), (84, 253149), (91, 233676), (117, 181748), (126, 168766), (156, 136311), (182, 116838), (234, 90874), (252, 84383), (273, 77892), (364, 58419), (468, 45437), (546, 38946), (819, 25964), (1092, 19473), (1638, 12982), (3276, 6491)]