20687150

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1297}}^1$

素因数の和:1349

約数の個数: 48

約数和(自身を含む): 43457040

約数和(自身を除く): 22769890

約数列:

[1, 2, 5, 10, 11, 22, 25, 29, 50, 55, 58, 110, 145, 275, 290, 319, 550, 638, 725, 1297, 1450, 1595, 2594, 3190, 6485, 7975, 12970, 14267, 15950, 28534, 32425, 37613, 64850, 71335, 75226, 142670, 188065, 356675, 376130, 413743, 713350, 827486, 940325, 1880650, 2068715, 4137430, 10343575, 20687150]

約数ペア:

[(1, 20687150), (2, 10343575), (5, 4137430), (10, 2068715), (11, 1880650), (22, 940325), (25, 827486), (29, 713350), (50, 413743), (55, 376130), (58, 356675), (110, 188065), (145, 142670), (275, 75226), (290, 71335), (319, 64850), (550, 37613), (638, 32425), (725, 28534), (1297, 15950), (1450, 14267), (1595, 12970), (2594, 7975), (3190, 6485)]