21014745100

素因数分解:

$2^2\times 5^2\times {\mathrm{83}}^1\times {\mathrm{137}}^1\times {\mathrm{18481}}^1$

素因数の和:18715

約数の個数: 72

約数和(自身を含む): 46490805648

約数和(自身を除く): 25476060548

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 83, 100, 137, 166, 274, 332, 415, 548, 685, 830, 1370, 1660, 2075, 2740, 3425, 4150, 6850, 8300, 11371, 13700, 18481, 22742, 36962, 45484, 56855, 73924, 92405, 113710, 184810, 227420, 284275, 369620, 462025, 568550, 924050, 1137100, 1533923, 1848100, 2531897, 3067846, 5063794, 6135692, 7669615, 10127588, 12659485, 15339230, 25318970, 30678460, 38348075, 50637940, 63297425, 76696150, 126594850, 153392300, 210147451, 253189700, 420294902, 840589804, 1050737255, 2101474510, 4202949020, 5253686275, 10507372550, 21014745100]

約数ペア:

[(1, 21014745100), (2, 10507372550), (4, 5253686275), (5, 4202949020), (10, 2101474510), (20, 1050737255), (25, 840589804), (50, 420294902), (83, 253189700), (100, 210147451), (137, 153392300), (166, 126594850), (274, 76696150), (332, 63297425), (415, 50637940), (548, 38348075), (685, 30678460), (830, 25318970), (1370, 15339230), (1660, 12659485), (2075, 10127588), (2740, 7669615), (3425, 6135692), (4150, 5063794), (6850, 3067846), (8300, 2531897), (11371, 1848100), (13700, 1533923), (18481, 1137100), (22742, 924050), (36962, 568550), (45484, 462025), (56855, 369620), (73924, 284275), (92405, 227420), (113710, 184810)]