19987670

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{439}}^1$

素因数の和:632

約数の個数: 32

約数和(自身を含む): 37540800

約数和(自身を除く): 17553130

約数列:

[1, 2, 5, 10, 29, 58, 145, 157, 290, 314, 439, 785, 878, 1570, 2195, 4390, 4553, 9106, 12731, 22765, 25462, 45530, 63655, 68923, 127310, 137846, 344615, 689230, 1998767, 3997534, 9993835, 19987670]

約数ペア:

[(1, 19987670), (2, 9993835), (5, 3997534), (10, 1998767), (29, 689230), (58, 344615), (145, 137846), (157, 127310), (290, 68923), (314, 63655), (439, 45530), (785, 25462), (878, 22765), (1570, 12731), (2195, 9106), (4390, 4553)]