81943808

素因数分解:

$2^8\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{991}}^1$

素因数の和:1043

約数の個数: 72

約数和(自身を含む): 182488320

約数和(自身を除く): 100544512

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 64, 68, 76, 128, 136, 152, 256, 272, 304, 323, 544, 608, 646, 991, 1088, 1216, 1292, 1982, 2176, 2432, 2584, 3964, 4352, 4864, 5168, 7928, 10336, 15856, 16847, 18829, 20672, 31712, 33694, 37658, 41344, 63424, 67388, 75316, 82688, 126848, 134776, 150632, 253696, 269552, 301264, 320093, 539104, 602528, 640186, 1078208, 1205056, 1280372, 2156416, 2410112, 2560744, 4312832, 4820224, 5121488, 10242976, 20485952, 40971904, 81943808]

約数ペア:

[(1, 81943808), (2, 40971904), (4, 20485952), (8, 10242976), (16, 5121488), (17, 4820224), (19, 4312832), (32, 2560744), (34, 2410112), (38, 2156416), (64, 1280372), (68, 1205056), (76, 1078208), (128, 640186), (136, 602528), (152, 539104), (256, 320093), (272, 301264), (304, 269552), (323, 253696), (544, 150632), (608, 134776), (646, 126848), (991, 82688), (1088, 75316), (1216, 67388), (1292, 63424), (1982, 41344), (2176, 37658), (2432, 33694), (2584, 31712), (3964, 20672), (4352, 18829), (4864, 16847), (5168, 15856), (7928, 10336)]