20213156943

素因数分解:

$3^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{26357}}^1$

素因数の和:26461

約数の個数: 72

約数和(自身を含む): 35625051072

約数和(自身を除く): 15411894129

約数列:

[1, 3, 7, 9, 21, 37, 47, 49, 63, 111, 141, 147, 259, 329, 333, 423, 441, 777, 987, 1739, 1813, 2303, 2331, 2961, 5217, 5439, 6909, 12173, 15651, 16317, 20727, 26357, 36519, 79071, 85211, 109557, 184499, 237213, 255633, 553497, 766899, 975209, 1238779, 1291493, 1660491, 2925627, 3716337, 3874479, 6826463, 8671453, 8776881, 11149011, 11623437, 20479389, 26014359, 45834823, 47785241, 60700171, 61438167, 78043077, 137504469, 143355723, 182100513, 320843761, 412513407, 430067169, 546301539, 962531283, 2245906327, 2887593849, 6737718981, 20213156943]

約数ペア:

[(1, 20213156943), (3, 6737718981), (7, 2887593849), (9, 2245906327), (21, 962531283), (37, 546301539), (47, 430067169), (49, 412513407), (63, 320843761), (111, 182100513), (141, 143355723), (147, 137504469), (259, 78043077), (329, 61438167), (333, 60700171), (423, 47785241), (441, 45834823), (777, 26014359), (987, 20479389), (1739, 11623437), (1813, 11149011), (2303, 8776881), (2331, 8671453), (2961, 6826463), (5217, 3874479), (5439, 3716337), (6909, 2925627), (12173, 1660491), (15651, 1291493), (16317, 1238779), (20727, 975209), (26357, 766899), (36519, 553497), (79071, 255633), (85211, 237213), (109557, 184499)]