68004020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{7963}}^1$

素因数の和:8040

約数の個数: 48

約数和(自身を含む): 165906048

約数和(自身を除く): 97902028

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 4270, 7963, 8540, 15926, 31852, 39815, 55741, 79630, 111482, 159260, 222964, 278705, 485743, 557410, 971486, 1114820, 1942972, 2428715, 3400201, 4857430, 6800402, 9714860, 13600804, 17001005, 34002010, 68004020]

約数ペア:

[(1, 68004020), (2, 34002010), (4, 17001005), (5, 13600804), (7, 9714860), (10, 6800402), (14, 4857430), (20, 3400201), (28, 2428715), (35, 1942972), (61, 1114820), (70, 971486), (122, 557410), (140, 485743), (244, 278705), (305, 222964), (427, 159260), (610, 111482), (854, 79630), (1220, 55741), (1708, 39815), (2135, 31852), (4270, 15926), (7963, 8540)]