20815696449

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{233}}^1\times {\mathrm{887}}^1$

素因数の和:1195

約数の個数: 72

約数和(自身を含む): 32934200832

約数和(自身を除く): 12118504383

約数列:

[1, 3, 9, 19, 31, 57, 93, 171, 233, 279, 361, 589, 699, 887, 1083, 1767, 2097, 2661, 3249, 4427, 5301, 7223, 7983, 11191, 13281, 16853, 21669, 27497, 33573, 39843, 50559, 65007, 82491, 84113, 100719, 137237, 151677, 206671, 247473, 252339, 320207, 411711, 522443, 620013, 757017, 960621, 1235133, 1567329, 1860039, 2607503, 2881863, 3926749, 4701987, 6406801, 7822509, 9926417, 11780247, 19220403, 23467527, 29779251, 35340741, 57661209, 74608231, 89337753, 121729219, 223824693, 365187657, 671474079, 1095562971, 2312855161, 6938565483, 20815696449]

約数ペア:

[(1, 20815696449), (3, 6938565483), (9, 2312855161), (19, 1095562971), (31, 671474079), (57, 365187657), (93, 223824693), (171, 121729219), (233, 89337753), (279, 74608231), (361, 57661209), (589, 35340741), (699, 29779251), (887, 23467527), (1083, 19220403), (1767, 11780247), (2097, 9926417), (2661, 7822509), (3249, 6406801), (4427, 4701987), (5301, 3926749), (7223, 2881863), (7983, 2607503), (11191, 1860039), (13281, 1567329), (16853, 1235133), (21669, 960621), (27497, 757017), (33573, 620013), (39843, 522443), (50559, 411711), (65007, 320207), (82491, 252339), (84113, 247473), (100719, 206671), (137237, 151677)]