20218178455

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{523}}^1\times {\mathrm{863}}^1$

素因数の和:1456

約数の個数: 48

約数和(自身を含む): 26686070784

約数和(自身を除く): 6467892329

約数列:

[1, 5, 17, 31, 85, 155, 289, 523, 527, 863, 1445, 2615, 2635, 4315, 8891, 8959, 14671, 16213, 26753, 44455, 44795, 73355, 81065, 133765, 151147, 249407, 275621, 451349, 454801, 755735, 1247035, 1378105, 2256745, 2274005, 4685557, 7672933, 7731617, 13991819, 23427785, 38364665, 38658085, 69959095, 130439861, 237860923, 652199305, 1189304615, 4043635691, 20218178455]

約数ペア:

[(1, 20218178455), (5, 4043635691), (17, 1189304615), (31, 652199305), (85, 237860923), (155, 130439861), (289, 69959095), (523, 38658085), (527, 38364665), (863, 23427785), (1445, 13991819), (2615, 7731617), (2635, 7672933), (4315, 4685557), (8891, 2274005), (8959, 2256745), (14671, 1378105), (16213, 1247035), (26753, 755735), (44455, 454801), (44795, 451349), (73355, 275621), (81065, 249407), (133765, 151147)]