20990916

素因数分解:

$2^2\times 3^2\times {\mathrm{131}}^1\times {\mathrm{4451}}^1$

素因数の和:4592

約数の個数: 36

約数和(自身を含む): 53477424

約数和(自身を除く): 32486508

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 131, 262, 393, 524, 786, 1179, 1572, 2358, 4451, 4716, 8902, 13353, 17804, 26706, 40059, 53412, 80118, 160236, 583081, 1166162, 1749243, 2332324, 3498486, 5247729, 6996972, 10495458, 20990916]

約数ペア:

[(1, 20990916), (2, 10495458), (3, 6996972), (4, 5247729), (6, 3498486), (9, 2332324), (12, 1749243), (18, 1166162), (36, 583081), (131, 160236), (262, 80118), (393, 53412), (524, 40059), (786, 26706), (1179, 17804), (1572, 13353), (2358, 8902), (4451, 4716)]