20508980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1741}}^1$

素因数の和:1800

約数の個数: 48

約数和(自身を含む): 46824960

約数和(自身を除く): 26315980

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 380, 589, 620, 1178, 1741, 2356, 2945, 3482, 5890, 6964, 8705, 11780, 17410, 33079, 34820, 53971, 66158, 107942, 132316, 165395, 215884, 269855, 330790, 539710, 661580, 1025449, 1079420, 2050898, 4101796, 5127245, 10254490, 20508980]

約数ペア:

[(1, 20508980), (2, 10254490), (4, 5127245), (5, 4101796), (10, 2050898), (19, 1079420), (20, 1025449), (31, 661580), (38, 539710), (62, 330790), (76, 269855), (95, 215884), (124, 165395), (155, 132316), (190, 107942), (310, 66158), (380, 53971), (589, 34820), (620, 33079), (1178, 17410), (1741, 11780), (2356, 8705), (2945, 6964), (3482, 5890)]