20129571

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{937}}^1$

素因数の和:992

約数の個数: 48

約数和(自身を含む): 37459968

約数和(自身を除く): 17330397

約数列:

[1, 3, 7, 9, 11, 21, 31, 33, 63, 77, 93, 99, 217, 231, 279, 341, 651, 693, 937, 1023, 1953, 2387, 2811, 3069, 6559, 7161, 8433, 10307, 19677, 21483, 29047, 30921, 59031, 72149, 87141, 92763, 203329, 216447, 261423, 319517, 609987, 649341, 958551, 1829961, 2236619, 2875653, 6709857, 20129571]

約数ペア:

[(1, 20129571), (3, 6709857), (7, 2875653), (9, 2236619), (11, 1829961), (21, 958551), (31, 649341), (33, 609987), (63, 319517), (77, 261423), (93, 216447), (99, 203329), (217, 92763), (231, 87141), (279, 72149), (341, 59031), (651, 30921), (693, 29047), (937, 21483), (1023, 19677), (1953, 10307), (2387, 8433), (2811, 7161), (3069, 6559)]