20158215

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{563}}^1$

素因数の和:620

約数の個数: 64

約数和(自身を含む): 41582592

約数和(自身を除く): 21424377

約数列:

[1, 3, 5, 7, 11, 15, 21, 31, 33, 35, 55, 77, 93, 105, 155, 165, 217, 231, 341, 385, 465, 563, 651, 1023, 1085, 1155, 1689, 1705, 2387, 2815, 3255, 3941, 5115, 6193, 7161, 8445, 11823, 11935, 17453, 18579, 19705, 30965, 35805, 43351, 52359, 59115, 87265, 92895, 122171, 130053, 191983, 216755, 261795, 366513, 575949, 610855, 650265, 959915, 1343881, 1832565, 2879745, 4031643, 6719405, 20158215]

約数ペア:

[(1, 20158215), (3, 6719405), (5, 4031643), (7, 2879745), (11, 1832565), (15, 1343881), (21, 959915), (31, 650265), (33, 610855), (35, 575949), (55, 366513), (77, 261795), (93, 216755), (105, 191983), (155, 130053), (165, 122171), (217, 92895), (231, 87265), (341, 59115), (385, 52359), (465, 43351), (563, 35805), (651, 30965), (1023, 19705), (1085, 18579), (1155, 17453), (1689, 11935), (1705, 11823), (2387, 8445), (2815, 7161), (3255, 6193), (3941, 5115)]