20807521072

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{78583}}^1$

素因数の和:78690

約数の個数: 80

約数和(自身を含む): 46383420160

約数和(自身を除く): 25575899088

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 67, 76, 104, 134, 152, 208, 247, 268, 304, 494, 536, 871, 988, 1072, 1273, 1742, 1976, 2546, 3484, 3952, 5092, 6968, 10184, 13936, 16549, 20368, 33098, 66196, 78583, 132392, 157166, 264784, 314332, 628664, 1021579, 1257328, 1493077, 2043158, 2986154, 4086316, 5265061, 5972308, 8172632, 10530122, 11944616, 16345264, 19410001, 21060244, 23889232, 38820002, 42120488, 68445793, 77640004, 84240976, 100036159, 136891586, 155280008, 200072318, 273783172, 310560016, 400144636, 547566344, 800289272, 1095132688, 1300470067, 1600578544, 2600940134, 5201880268, 10403760536, 20807521072]

約数ペア:

[(1, 20807521072), (2, 10403760536), (4, 5201880268), (8, 2600940134), (13, 1600578544), (16, 1300470067), (19, 1095132688), (26, 800289272), (38, 547566344), (52, 400144636), (67, 310560016), (76, 273783172), (104, 200072318), (134, 155280008), (152, 136891586), (208, 100036159), (247, 84240976), (268, 77640004), (304, 68445793), (494, 42120488), (536, 38820002), (871, 23889232), (988, 21060244), (1072, 19410001), (1273, 16345264), (1742, 11944616), (1976, 10530122), (2546, 8172632), (3484, 5972308), (3952, 5265061), (5092, 4086316), (6968, 2986154), (10184, 2043158), (13936, 1493077), (16549, 1257328), (20368, 1021579), (33098, 628664), (66196, 314332), (78583, 264784), (132392, 157166)]