209121640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{787}}^1$

素因数の和:891

約数の個数: 128

約数和(自身を含む): 587784960

約数和(自身を除く): 378663320

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 73, 91, 104, 130, 140, 146, 182, 260, 280, 292, 364, 365, 455, 511, 520, 584, 728, 730, 787, 910, 949, 1022, 1460, 1574, 1820, 1898, 2044, 2555, 2920, 3148, 3640, 3796, 3935, 4088, 4745, 5110, 5509, 6296, 6643, 7592, 7870, 9490, 10220, 10231, 11018, 13286, 15740, 18980, 20440, 20462, 22036, 26572, 27545, 31480, 33215, 37960, 40924, 44072, 51155, 53144, 55090, 57451, 66430, 71617, 81848, 102310, 110180, 114902, 132860, 143234, 204620, 220360, 229804, 265720, 286468, 287255, 358085, 402157, 409240, 459608, 572936, 574510, 716170, 746863, 804314, 1149020, 1432340, 1493726, 1608628, 2010785, 2298040, 2864680, 2987452, 3217256, 3734315, 4021570, 5228041, 5974904, 7468630, 8043140, 10456082, 14937260, 16086280, 20912164, 26140205, 29874520, 41824328, 52280410, 104560820, 209121640]

約数ペア:

[(1, 209121640), (2, 104560820), (4, 52280410), (5, 41824328), (7, 29874520), (8, 26140205), (10, 20912164), (13, 16086280), (14, 14937260), (20, 10456082), (26, 8043140), (28, 7468630), (35, 5974904), (40, 5228041), (52, 4021570), (56, 3734315), (65, 3217256), (70, 2987452), (73, 2864680), (91, 2298040), (104, 2010785), (130, 1608628), (140, 1493726), (146, 1432340), (182, 1149020), (260, 804314), (280, 746863), (292, 716170), (364, 574510), (365, 572936), (455, 459608), (511, 409240), (520, 402157), (584, 358085), (728, 287255), (730, 286468), (787, 265720), (910, 229804), (949, 220360), (1022, 204620), (1460, 143234), (1574, 132860), (1820, 114902), (1898, 110180), (2044, 102310), (2555, 81848), (2920, 71617), (3148, 66430), (3640, 57451), (3796, 55090), (3935, 53144), (4088, 51155), (4745, 44072), (5110, 40924), (5509, 37960), (6296, 33215), (6643, 31480), (7592, 27545), (7870, 26572), (9490, 22036), (10220, 20462), (10231, 20440), (11018, 18980), (13286, 15740)]