1966642015

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{193}}^1\times {\mathrm{389}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 2658389760

約数和(自身を除く): 691747745

約数列:

[1, 5, 13, 31, 65, 155, 169, 193, 389, 403, 845, 965, 1945, 2015, 2509, 5057, 5239, 5983, 12059, 12545, 25285, 26195, 29915, 32617, 60295, 65741, 75077, 77779, 156767, 163085, 328705, 375385, 388895, 783835, 976001, 1011127, 2037971, 2327387, 4880005, 5055635, 10189855, 11636935, 12688013, 30256031, 63440065, 151280155, 393328403, 1966642015]

約数ペア:

[(1, 1966642015), (5, 393328403), (13, 151280155), (31, 63440065), (65, 30256031), (155, 12688013), (169, 11636935), (193, 10189855), (389, 5055635), (403, 4880005), (845, 2327387), (965, 2037971), (1945, 1011127), (2015, 976001), (2509, 783835), (5057, 388895), (5239, 375385), (5983, 328705), (12059, 163085), (12545, 156767), (25285, 77779), (26195, 75077), (29915, 65741), (32617, 60295)]