217570028

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{971}}^1$

素因数の和:1158

約数の個数: 48

約数和(自身を含む): 426746880

約数和(自身を除く): 209176852

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 139, 278, 403, 556, 806, 971, 1612, 1807, 1942, 3614, 3884, 4309, 7228, 8618, 12623, 17236, 25246, 30101, 50492, 56017, 60202, 112034, 120404, 134969, 224068, 269938, 391313, 539876, 782626, 1565252, 1754597, 3509194, 4184039, 7018388, 8368078, 16736156, 54392507, 108785014, 217570028]

約数ペア:

[(1, 217570028), (2, 108785014), (4, 54392507), (13, 16736156), (26, 8368078), (31, 7018388), (52, 4184039), (62, 3509194), (124, 1754597), (139, 1565252), (278, 782626), (403, 539876), (556, 391313), (806, 269938), (971, 224068), (1612, 134969), (1807, 120404), (1942, 112034), (3614, 60202), (3884, 56017), (4309, 50492), (7228, 30101), (8618, 25246), (12623, 17236)]