16990380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{8581}}^1$

素因数の和:8607

約数の個数: 72

約数和(自身を含む): 56229264

約数和(自身を除く): 39238884

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 8581, 17162, 25743, 34324, 42905, 51486, 77229, 85810, 94391, 102972, 128715, 154458, 171620, 188782, 257430, 283173, 308916, 377564, 386145, 471955, 514860, 566346, 772290, 849519, 943910, 1132692, 1415865, 1544580, 1699038, 1887820, 2831730, 3398076, 4247595, 5663460, 8495190, 16990380]

約数ペア:

[(1, 16990380), (2, 8495190), (3, 5663460), (4, 4247595), (5, 3398076), (6, 2831730), (9, 1887820), (10, 1699038), (11, 1544580), (12, 1415865), (15, 1132692), (18, 943910), (20, 849519), (22, 772290), (30, 566346), (33, 514860), (36, 471955), (44, 386145), (45, 377564), (55, 308916), (60, 283173), (66, 257430), (90, 188782), (99, 171620), (110, 154458), (132, 128715), (165, 102972), (180, 94391), (198, 85810), (220, 77229), (330, 51486), (396, 42905), (495, 34324), (660, 25743), (990, 17162), (1980, 8581)]