209917708

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{509}}^1$

素因数の和:647

約数の個数: 96

約数和(自身を含む): 499000320

約数和(自身を除く): 289082612

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 103, 143, 154, 182, 206, 286, 308, 364, 412, 509, 572, 721, 1001, 1018, 1133, 1339, 1442, 2002, 2036, 2266, 2678, 2884, 3563, 4004, 4532, 5356, 5599, 6617, 7126, 7931, 9373, 11198, 13234, 14252, 14729, 15862, 18746, 22396, 26468, 29458, 31724, 37492, 39193, 46319, 52427, 58916, 72787, 78386, 92638, 103103, 104854, 145574, 156772, 185276, 206206, 209708, 291148, 366989, 412412, 509509, 576697, 681551, 733978, 1019018, 1153394, 1363102, 1467956, 2038036, 2306788, 2726204, 4036879, 4770857, 7497061, 8073758, 9541714, 14994122, 16147516, 19083428, 29988244, 52479427, 104958854, 209917708]

約数ペア:

[(1, 209917708), (2, 104958854), (4, 52479427), (7, 29988244), (11, 19083428), (13, 16147516), (14, 14994122), (22, 9541714), (26, 8073758), (28, 7497061), (44, 4770857), (52, 4036879), (77, 2726204), (91, 2306788), (103, 2038036), (143, 1467956), (154, 1363102), (182, 1153394), (206, 1019018), (286, 733978), (308, 681551), (364, 576697), (412, 509509), (509, 412412), (572, 366989), (721, 291148), (1001, 209708), (1018, 206206), (1133, 185276), (1339, 156772), (1442, 145574), (2002, 104854), (2036, 103103), (2266, 92638), (2678, 78386), (2884, 72787), (3563, 58916), (4004, 52427), (4532, 46319), (5356, 39193), (5599, 37492), (6617, 31724), (7126, 29458), (7931, 26468), (9373, 22396), (11198, 18746), (13234, 15862), (14252, 14729)]