21548565

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{271}}^1$

素因数の和:335

約数の個数: 64

約数和(自身を含む): 41779200

約数和(自身を除く): 20230635

約数列:

[1, 3, 5, 9, 15, 19, 27, 31, 45, 57, 93, 95, 135, 155, 171, 271, 279, 285, 465, 513, 589, 813, 837, 855, 1355, 1395, 1767, 2439, 2565, 2945, 4065, 4185, 5149, 5301, 7317, 8401, 8835, 12195, 15447, 15903, 25203, 25745, 26505, 36585, 42005, 46341, 75609, 77235, 79515, 126015, 139023, 159619, 226827, 231705, 378045, 478857, 695115, 798095, 1134135, 1436571, 2394285, 4309713, 7182855, 21548565]

約数ペア:

[(1, 21548565), (3, 7182855), (5, 4309713), (9, 2394285), (15, 1436571), (19, 1134135), (27, 798095), (31, 695115), (45, 478857), (57, 378045), (93, 231705), (95, 226827), (135, 159619), (155, 139023), (171, 126015), (271, 79515), (279, 77235), (285, 75609), (465, 46341), (513, 42005), (589, 36585), (813, 26505), (837, 25745), (855, 25203), (1355, 15903), (1395, 15447), (1767, 12195), (2439, 8835), (2565, 8401), (2945, 7317), (4065, 5301), (4185, 5149)]