81499904

素因数分解:

$2^8\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:401

約数の個数: 72

約数和(自身を含む): 175645008

約数和(自身を除く): 94145104

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 61, 64, 68, 122, 128, 136, 244, 256, 272, 307, 488, 544, 614, 976, 1037, 1088, 1228, 1952, 2074, 2176, 2456, 3904, 4148, 4352, 4912, 5219, 7808, 8296, 9824, 10438, 15616, 16592, 18727, 19648, 20876, 33184, 37454, 39296, 41752, 66368, 74908, 78592, 83504, 132736, 149816, 167008, 265472, 299632, 318359, 334016, 599264, 636718, 668032, 1198528, 1273436, 1336064, 2397056, 2546872, 4794112, 5093744, 10187488, 20374976, 40749952, 81499904]

約数ペア:

[(1, 81499904), (2, 40749952), (4, 20374976), (8, 10187488), (16, 5093744), (17, 4794112), (32, 2546872), (34, 2397056), (61, 1336064), (64, 1273436), (68, 1198528), (122, 668032), (128, 636718), (136, 599264), (244, 334016), (256, 318359), (272, 299632), (307, 265472), (488, 167008), (544, 149816), (614, 132736), (976, 83504), (1037, 78592), (1088, 74908), (1228, 66368), (1952, 41752), (2074, 39296), (2176, 37454), (2456, 33184), (3904, 20876), (4148, 19648), (4352, 18727), (4912, 16592), (5219, 15616), (7808, 10438), (8296, 9824)]