21218847680

素因数分解:

$2^6\times 5^1\times {\mathrm{331}}^1\times {\mathrm{200329}}^1$

素因数の和:200677

約数の個数: 56

約数和(自身を含む): 50680284720

約数和(自身を除く): 29461437040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 331, 662, 1324, 1655, 2648, 3310, 5296, 6620, 10592, 13240, 21184, 26480, 52960, 105920, 200329, 400658, 801316, 1001645, 1602632, 2003290, 3205264, 4006580, 6410528, 8013160, 12821056, 16026320, 32052640, 64105280, 66308899, 132617798, 265235596, 331544495, 530471192, 663088990, 1060942384, 1326177980, 2121884768, 2652355960, 4243769536, 5304711920, 10609423840, 21218847680]

約数ペア:

[(1, 21218847680), (2, 10609423840), (4, 5304711920), (5, 4243769536), (8, 2652355960), (10, 2121884768), (16, 1326177980), (20, 1060942384), (32, 663088990), (40, 530471192), (64, 331544495), (80, 265235596), (160, 132617798), (320, 66308899), (331, 64105280), (662, 32052640), (1324, 16026320), (1655, 12821056), (2648, 8013160), (3310, 6410528), (5296, 4006580), (6620, 3205264), (10592, 2003290), (13240, 1602632), (21184, 1001645), (26480, 801316), (52960, 400658), (105920, 200329)]