261737278

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{251}}^1$

素因数の和:445

約数の個数: 48

約数和(自身を含む): 450455040

約数和(自身を除く): 188717762

約数列:

[1, 2, 11, 22, 31, 62, 121, 139, 242, 251, 278, 341, 502, 682, 1529, 2761, 3058, 3751, 4309, 5522, 7502, 7781, 8618, 15562, 16819, 30371, 33638, 34889, 47399, 60742, 69778, 85591, 94798, 171182, 383779, 521389, 767558, 941501, 1042778, 1081559, 1883002, 2163118, 4221569, 8443138, 11897149, 23794298, 130868639, 261737278]

約数ペア:

[(1, 261737278), (2, 130868639), (11, 23794298), (22, 11897149), (31, 8443138), (62, 4221569), (121, 2163118), (139, 1883002), (242, 1081559), (251, 1042778), (278, 941501), (341, 767558), (502, 521389), (682, 383779), (1529, 171182), (2761, 94798), (3058, 85591), (3751, 69778), (4309, 60742), (5522, 47399), (7502, 34889), (7781, 33638), (8618, 30371), (15562, 16819)]