20316904

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:194

約数の個数: 64

約数和(自身を含む): 42854400

約数和(自身を除く): 22537496

約数列:

[1, 2, 4, 8, 17, 31, 34, 61, 62, 68, 79, 122, 124, 136, 158, 244, 248, 316, 488, 527, 632, 1037, 1054, 1343, 1891, 2074, 2108, 2449, 2686, 3782, 4148, 4216, 4819, 4898, 5372, 7564, 8296, 9638, 9796, 10744, 15128, 19276, 19592, 32147, 38552, 41633, 64294, 81923, 83266, 128588, 149389, 163846, 166532, 257176, 298778, 327692, 333064, 597556, 655384, 1195112, 2539613, 5079226, 10158452, 20316904]

約数ペア:

[(1, 20316904), (2, 10158452), (4, 5079226), (8, 2539613), (17, 1195112), (31, 655384), (34, 597556), (61, 333064), (62, 327692), (68, 298778), (79, 257176), (122, 166532), (124, 163846), (136, 149389), (158, 128588), (244, 83266), (248, 81923), (316, 64294), (488, 41633), (527, 38552), (632, 32147), (1037, 19592), (1054, 19276), (1343, 15128), (1891, 10744), (2074, 9796), (2108, 9638), (2449, 8296), (2686, 7564), (3782, 5372), (4148, 4898), (4216, 4819)]