19801012

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1213}}^1$

素因数の和:1288

約数の個数: 48

約数和(自身を含む): 44053632

約数和(自身を除く): 24252620

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 53, 77, 106, 154, 212, 308, 371, 583, 742, 1166, 1213, 1484, 2332, 2426, 4081, 4852, 8162, 8491, 13343, 16324, 16982, 26686, 33964, 53372, 64289, 93401, 128578, 186802, 257156, 373604, 450023, 707179, 900046, 1414358, 1800092, 2828716, 4950253, 9900506, 19801012]

約数ペア:

[(1, 19801012), (2, 9900506), (4, 4950253), (7, 2828716), (11, 1800092), (14, 1414358), (22, 900046), (28, 707179), (44, 450023), (53, 373604), (77, 257156), (106, 186802), (154, 128578), (212, 93401), (308, 64289), (371, 53372), (583, 33964), (742, 26686), (1166, 16982), (1213, 16324), (1484, 13343), (2332, 8491), (2426, 8162), (4081, 4852)]