18508280

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:122

約数の個数: 128

約数和(自身を含む): 51840000

約数和(自身を除く): 33331720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 49, 56, 70, 71, 76, 95, 98, 133, 140, 142, 152, 190, 196, 245, 266, 280, 284, 343, 355, 380, 392, 490, 497, 532, 568, 665, 686, 710, 760, 931, 980, 994, 1064, 1330, 1349, 1372, 1420, 1715, 1862, 1960, 1988, 2485, 2660, 2698, 2744, 2840, 3430, 3479, 3724, 3976, 4655, 4970, 5320, 5396, 6517, 6745, 6860, 6958, 7448, 9310, 9443, 9940, 10792, 13034, 13490, 13720, 13916, 17395, 18620, 18886, 19880, 24353, 26068, 26980, 27832, 32585, 34790, 37240, 37772, 47215, 48706, 52136, 53960, 65170, 66101, 69580, 75544, 94430, 97412, 121765, 130340, 132202, 139160, 188860, 194824, 243530, 260680, 264404, 330505, 377720, 462707, 487060, 528808, 661010, 925414, 974120, 1322020, 1850828, 2313535, 2644040, 3701656, 4627070, 9254140, 18508280]

約数ペア:

[(1, 18508280), (2, 9254140), (4, 4627070), (5, 3701656), (7, 2644040), (8, 2313535), (10, 1850828), (14, 1322020), (19, 974120), (20, 925414), (28, 661010), (35, 528808), (38, 487060), (40, 462707), (49, 377720), (56, 330505), (70, 264404), (71, 260680), (76, 243530), (95, 194824), (98, 188860), (133, 139160), (140, 132202), (142, 130340), (152, 121765), (190, 97412), (196, 94430), (245, 75544), (266, 69580), (280, 66101), (284, 65170), (343, 53960), (355, 52136), (380, 48706), (392, 47215), (490, 37772), (497, 37240), (532, 34790), (568, 32585), (665, 27832), (686, 26980), (710, 26068), (760, 24353), (931, 19880), (980, 18886), (994, 18620), (1064, 17395), (1330, 13916), (1349, 13720), (1372, 13490), (1420, 13034), (1715, 10792), (1862, 9940), (1960, 9443), (1988, 9310), (2485, 7448), (2660, 6958), (2698, 6860), (2744, 6745), (2840, 6517), (3430, 5396), (3479, 5320), (3724, 4970), (3976, 4655)]