20678798

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^2\times {\mathrm{53}}^1$

素因数の和:153

約数の個数: 48

約数和(自身を含む): 38607840

約数和(自身を除く): 17929042

約数列:

[1, 2, 7, 14, 29, 31, 53, 58, 62, 106, 203, 217, 371, 406, 434, 742, 899, 961, 1537, 1643, 1798, 1922, 3074, 3286, 6293, 6727, 10759, 11501, 12586, 13454, 21518, 23002, 27869, 47647, 50933, 55738, 95294, 101866, 195083, 333529, 356531, 390166, 667058, 713062, 1477057, 2954114, 10339399, 20678798]

約数ペア:

[(1, 20678798), (2, 10339399), (7, 2954114), (14, 1477057), (29, 713062), (31, 667058), (53, 390166), (58, 356531), (62, 333529), (106, 195083), (203, 101866), (217, 95294), (371, 55738), (406, 50933), (434, 47647), (742, 27869), (899, 23002), (961, 21518), (1537, 13454), (1643, 12586), (1798, 11501), (1922, 10759), (3074, 6727), (3286, 6293)]