20815720705

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1\times {\mathrm{173}}^1$

素因数の和:419

約数の個数: 96

約数和(自身を含む): 29272223232

約数和(自身を除く): 8456502527

約数列:

[1, 5, 13, 23, 41, 65, 115, 151, 169, 173, 205, 299, 533, 755, 845, 865, 943, 1495, 1963, 2249, 2665, 3473, 3887, 3979, 4715, 6191, 6929, 7093, 9815, 11245, 12259, 17365, 19435, 19895, 25519, 26123, 29237, 30955, 34645, 35465, 45149, 51727, 61295, 80483, 92209, 127595, 130615, 142393, 146185, 159367, 163139, 225745, 258635, 339599, 402415, 461045, 586937, 600829, 672451, 711965, 796835, 815695, 1046279, 1071043, 1198717, 1697995, 1851109, 2120807, 2934685, 3004145, 3362255, 4414787, 5231395, 5355215, 5993585, 7810777, 9255545, 10604035, 13923559, 22073935, 24064417, 24633989, 27570491, 39053885, 69617795, 101540101, 120322085, 123169945, 137852455, 181006267, 320241857, 507700505, 905031335, 1601209285, 4163144141, 20815720705]

約数ペア:

[(1, 20815720705), (5, 4163144141), (13, 1601209285), (23, 905031335), (41, 507700505), (65, 320241857), (115, 181006267), (151, 137852455), (169, 123169945), (173, 120322085), (205, 101540101), (299, 69617795), (533, 39053885), (755, 27570491), (845, 24633989), (865, 24064417), (943, 22073935), (1495, 13923559), (1963, 10604035), (2249, 9255545), (2665, 7810777), (3473, 5993585), (3887, 5355215), (3979, 5231395), (4715, 4414787), (6191, 3362255), (6929, 3004145), (7093, 2934685), (9815, 2120807), (11245, 1851109), (12259, 1697995), (17365, 1198717), (19435, 1071043), (19895, 1046279), (25519, 815695), (26123, 796835), (29237, 711965), (30955, 672451), (34645, 600829), (35465, 586937), (45149, 461045), (51727, 402415), (61295, 339599), (80483, 258635), (92209, 225745), (127595, 163139), (130615, 159367), (142393, 146185)]