20987514

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{563}}^1$

素因数の和:699

約数の個数: 48

約数和(自身を含む): 48391200

約数和(自身を除く): 27403686

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 109, 114, 171, 218, 327, 342, 563, 654, 981, 1126, 1689, 1962, 2071, 3378, 4142, 5067, 6213, 10134, 10697, 12426, 18639, 21394, 32091, 37278, 61367, 64182, 96273, 122734, 184101, 192546, 368202, 552303, 1104606, 1165973, 2331946, 3497919, 6995838, 10493757, 20987514]

約数ペア:

[(1, 20987514), (2, 10493757), (3, 6995838), (6, 3497919), (9, 2331946), (18, 1165973), (19, 1104606), (38, 552303), (57, 368202), (109, 192546), (114, 184101), (171, 122734), (218, 96273), (327, 64182), (342, 61367), (563, 37278), (654, 32091), (981, 21394), (1126, 18639), (1689, 12426), (1962, 10697), (2071, 10134), (3378, 6213), (4142, 5067)]