20620928

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:233

約数の個数: 64

約数和(自身を含む): 44268000

約数和(自身を除く): 23647072

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 61, 64, 76, 122, 128, 139, 152, 244, 278, 304, 488, 556, 608, 976, 1112, 1159, 1216, 1952, 2224, 2318, 2432, 2641, 3904, 4448, 4636, 5282, 7808, 8479, 8896, 9272, 10564, 16958, 17792, 18544, 21128, 33916, 37088, 42256, 67832, 74176, 84512, 135664, 148352, 161101, 169024, 271328, 322202, 338048, 542656, 644404, 1085312, 1288808, 2577616, 5155232, 10310464, 20620928]

約数ペア:

[(1, 20620928), (2, 10310464), (4, 5155232), (8, 2577616), (16, 1288808), (19, 1085312), (32, 644404), (38, 542656), (61, 338048), (64, 322202), (76, 271328), (122, 169024), (128, 161101), (139, 148352), (152, 135664), (244, 84512), (278, 74176), (304, 67832), (488, 42256), (556, 37088), (608, 33916), (976, 21128), (1112, 18544), (1159, 17792), (1216, 16958), (1952, 10564), (2224, 9272), (2318, 8896), (2432, 8479), (2641, 7808), (3904, 5282), (4448, 4636)]