1340780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 3291456

約数和(自身を除く): 1950676

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 157, 244, 305, 314, 427, 610, 628, 785, 854, 1099, 1220, 1570, 1708, 2135, 2198, 3140, 4270, 4396, 5495, 8540, 9577, 10990, 19154, 21980, 38308, 47885, 67039, 95770, 134078, 191540, 268156, 335195, 670390, 1340780]

約数ペア:

[(1, 1340780), (2, 670390), (4, 335195), (5, 268156), (7, 191540), (10, 134078), (14, 95770), (20, 67039), (28, 47885), (35, 38308), (61, 21980), (70, 19154), (122, 10990), (140, 9577), (157, 8540), (244, 5495), (305, 4396), (314, 4270), (427, 3140), (610, 2198), (628, 2135), (785, 1708), (854, 1570), (1099, 1220)]