21905384345

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{383}}^1\times {\mathrm{571}}^1$

素因数の和:1062

約数の個数: 64

約数和(自身を含む): 30111105024

約数和(自身を除く): 8205720679

約数列:

[1, 5, 13, 23, 65, 67, 115, 299, 335, 383, 571, 871, 1495, 1541, 1915, 2855, 4355, 4979, 7423, 7705, 8809, 13133, 20033, 24895, 25661, 37115, 38257, 44045, 65665, 100165, 114517, 128305, 170729, 191285, 218693, 333593, 497341, 572585, 590203, 853645, 879911, 1093465, 1667965, 2486705, 2843009, 2951015, 4399555, 5029939, 7672639, 11438843, 14215045, 14652431, 25149695, 38363195, 57194215, 65389207, 73262155, 190481603, 326946035, 337005913, 952408015, 1685029565, 4381076869, 21905384345]

約数ペア:

[(1, 21905384345), (5, 4381076869), (13, 1685029565), (23, 952408015), (65, 337005913), (67, 326946035), (115, 190481603), (299, 73262155), (335, 65389207), (383, 57194215), (571, 38363195), (871, 25149695), (1495, 14652431), (1541, 14215045), (1915, 11438843), (2855, 7672639), (4355, 5029939), (4979, 4399555), (7423, 2951015), (7705, 2843009), (8809, 2486705), (13133, 1667965), (20033, 1093465), (24895, 879911), (25661, 853645), (37115, 590203), (38257, 572585), (44045, 497341), (65665, 333593), (100165, 218693), (114517, 191285), (128305, 170729)]