7996780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{223}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 18514944

約数和(自身を除く): 10518164

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 163, 220, 223, 326, 446, 652, 815, 892, 1115, 1630, 1793, 2230, 2453, 3260, 3586, 4460, 4906, 7172, 8965, 9812, 12265, 17930, 24530, 35860, 36349, 49060, 72698, 145396, 181745, 363490, 399839, 726980, 799678, 1599356, 1999195, 3998390, 7996780]

約数ペア:

[(1, 7996780), (2, 3998390), (4, 1999195), (5, 1599356), (10, 799678), (11, 726980), (20, 399839), (22, 363490), (44, 181745), (55, 145396), (110, 72698), (163, 49060), (220, 36349), (223, 35860), (326, 24530), (446, 17930), (652, 12265), (815, 9812), (892, 8965), (1115, 7172), (1630, 4906), (1793, 4460), (2230, 3586), (2453, 3260)]