4397740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 9918720

約数和(自身を除く): 5520980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 71, 76, 95, 142, 163, 190, 284, 326, 355, 380, 652, 710, 815, 1349, 1420, 1630, 2698, 3097, 3260, 5396, 6194, 6745, 11573, 12388, 13490, 15485, 23146, 26980, 30970, 46292, 57865, 61940, 115730, 219887, 231460, 439774, 879548, 1099435, 2198870, 4397740]

約数ペア:

[(1, 4397740), (2, 2198870), (4, 1099435), (5, 879548), (10, 439774), (19, 231460), (20, 219887), (38, 115730), (71, 61940), (76, 57865), (95, 46292), (142, 30970), (163, 26980), (190, 23146), (284, 15485), (326, 13490), (355, 12388), (380, 11573), (652, 6745), (710, 6194), (815, 5396), (1349, 3260), (1420, 3097), (1630, 2698)]