20982195

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:157

約数の個数: 72

約数和(自身を含む): 41109120

約数和(自身を除く): 20126925

約数列:

[1, 3, 5, 9, 13, 15, 31, 39, 45, 65, 89, 93, 117, 155, 169, 195, 267, 279, 403, 445, 465, 507, 585, 801, 845, 1157, 1209, 1335, 1395, 1521, 2015, 2535, 2759, 3471, 3627, 4005, 5239, 5785, 6045, 7605, 8277, 10413, 13795, 15041, 15717, 17355, 18135, 24831, 26195, 35867, 41385, 45123, 47151, 52065, 75205, 78585, 107601, 124155, 135369, 179335, 225615, 235755, 322803, 466271, 538005, 676845, 1398813, 1614015, 2331355, 4196439, 6994065, 20982195]

約数ペア:

[(1, 20982195), (3, 6994065), (5, 4196439), (9, 2331355), (13, 1614015), (15, 1398813), (31, 676845), (39, 538005), (45, 466271), (65, 322803), (89, 235755), (93, 225615), (117, 179335), (155, 135369), (169, 124155), (195, 107601), (267, 78585), (279, 75205), (403, 52065), (445, 47151), (465, 45123), (507, 41385), (585, 35867), (801, 26195), (845, 24831), (1157, 18135), (1209, 17355), (1335, 15717), (1395, 15041), (1521, 13795), (2015, 10413), (2535, 8277), (2759, 7605), (3471, 6045), (3627, 5785), (4005, 5239)]