20205860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{887}}^1$

素因数の和:980

約数の個数: 48

約数和(自身を含む): 45650304

約数和(自身を除く): 25444444

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 67, 68, 85, 134, 170, 268, 335, 340, 670, 887, 1139, 1340, 1774, 2278, 3548, 4435, 4556, 5695, 8870, 11390, 15079, 17740, 22780, 30158, 59429, 60316, 75395, 118858, 150790, 237716, 297145, 301580, 594290, 1010293, 1188580, 2020586, 4041172, 5051465, 10102930, 20205860]

約数ペア:

[(1, 20205860), (2, 10102930), (4, 5051465), (5, 4041172), (10, 2020586), (17, 1188580), (20, 1010293), (34, 594290), (67, 301580), (68, 297145), (85, 237716), (134, 150790), (170, 118858), (268, 75395), (335, 60316), (340, 59429), (670, 30158), (887, 22780), (1139, 17740), (1340, 15079), (1774, 11390), (2278, 8870), (3548, 5695), (4435, 4556)]