209995461

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{179}}^1\times {\mathrm{271}}^1$

素因数の和:506

約数の個数: 48

約数和(自身を含む): 338607360

約数和(自身を除く): 128611899

約数列:

[1, 3, 9, 13, 37, 39, 111, 117, 179, 271, 333, 481, 537, 813, 1443, 1611, 2327, 2439, 3523, 4329, 6623, 6981, 10027, 10569, 19869, 20943, 30081, 31707, 48509, 59607, 86099, 90243, 130351, 145527, 258297, 391053, 436581, 630617, 774891, 1173159, 1794833, 1891851, 5384499, 5675553, 16153497, 23332829, 69998487, 209995461]

約数ペア:

[(1, 209995461), (3, 69998487), (9, 23332829), (13, 16153497), (37, 5675553), (39, 5384499), (111, 1891851), (117, 1794833), (179, 1173159), (271, 774891), (333, 630617), (481, 436581), (537, 391053), (813, 258297), (1443, 145527), (1611, 130351), (2327, 90243), (2439, 86099), (3523, 59607), (4329, 48509), (6623, 31707), (6981, 30081), (10027, 20943), (10569, 19869)]