819163494

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{640973}}^1$

素因数の和:641052

約数の個数: 24

約数和(自身を含む): 1799854992

約数和(自身を除く): 980691498

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 640973, 1281946, 1922919, 3845838, 5768757, 11537514, 45509083, 91018166, 136527249, 273054498, 409581747, 819163494]

約数ペア:

[(1, 819163494), (2, 409581747), (3, 273054498), (6, 136527249), (9, 91018166), (18, 45509083), (71, 11537514), (142, 5768757), (213, 3845838), (426, 1922919), (639, 1281946), (1278, 640973)]