20493945

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{83}}^1$

素因数の和:187

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 18213255

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 59, 83, 93, 135, 155, 177, 249, 279, 295, 415, 465, 531, 747, 837, 885, 1245, 1395, 1593, 1829, 2241, 2573, 2655, 3735, 4185, 4897, 5487, 7719, 7965, 9145, 11205, 12865, 14691, 16461, 23157, 24485, 27435, 38595, 44073, 49383, 69471, 73455, 82305, 115785, 132219, 151807, 220365, 246915, 347355, 455421, 661095, 759035, 1366263, 2277105, 4098789, 6831315, 20493945]

約数ペア:

[(1, 20493945), (3, 6831315), (5, 4098789), (9, 2277105), (15, 1366263), (27, 759035), (31, 661095), (45, 455421), (59, 347355), (83, 246915), (93, 220365), (135, 151807), (155, 132219), (177, 115785), (249, 82305), (279, 73455), (295, 69471), (415, 49383), (465, 44073), (531, 38595), (747, 27435), (837, 24485), (885, 23157), (1245, 16461), (1395, 14691), (1593, 12865), (1829, 11205), (2241, 9145), (2573, 7965), (2655, 7719), (3735, 5487), (4185, 4897)]