81910215

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{827}}^1$

素因数の和:940

約数の個数: 48

約数和(自身を含む): 148801536

約数和(自身を除く): 66891321

約数列:

[1, 3, 5, 9, 15, 31, 45, 71, 93, 155, 213, 279, 355, 465, 639, 827, 1065, 1395, 2201, 2481, 3195, 4135, 6603, 7443, 11005, 12405, 19809, 25637, 33015, 37215, 58717, 76911, 99045, 128185, 176151, 230733, 293585, 384555, 528453, 880755, 1153665, 1820227, 2642265, 5460681, 9101135, 16382043, 27303405, 81910215]

約数ペア:

[(1, 81910215), (3, 27303405), (5, 16382043), (9, 9101135), (15, 5460681), (31, 2642265), (45, 1820227), (71, 1153665), (93, 880755), (155, 528453), (213, 384555), (279, 293585), (355, 230733), (465, 176151), (639, 128185), (827, 99045), (1065, 76911), (1395, 58717), (2201, 37215), (2481, 33015), (3195, 25637), (4135, 19809), (6603, 12405), (7443, 11005)]