21049367075

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{39887}}^1$

素因数の和:40028

約数の個数: 48

約数和(自身を含む): 30270205440

約数和(自身を除く): 9220838365

約数列:

[1, 5, 11, 19, 25, 55, 95, 101, 209, 275, 475, 505, 1045, 1111, 1919, 2525, 5225, 5555, 9595, 21109, 27775, 39887, 47975, 105545, 199435, 438757, 527725, 757853, 997175, 2193785, 3789265, 4028587, 8336383, 10968925, 18946325, 20142935, 41681915, 44314457, 76543153, 100714675, 208409575, 221572285, 382715765, 841974683, 1107861425, 1913578825, 4209873415, 21049367075]

約数ペア:

[(1, 21049367075), (5, 4209873415), (11, 1913578825), (19, 1107861425), (25, 841974683), (55, 382715765), (95, 221572285), (101, 208409575), (209, 100714675), (275, 76543153), (475, 44314457), (505, 41681915), (1045, 20142935), (1111, 18946325), (1919, 10968925), (2525, 8336383), (5225, 4028587), (5555, 3789265), (9595, 2193785), (21109, 997175), (27775, 757853), (39887, 527725), (47975, 438757), (105545, 199435)]