20850702920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3361}}^1\times {\mathrm{5003}}^1$

素因数の和:8406

約数の個数: 64

約数和(自身を含む): 48451530240

約数和(自身を除く): 27600827320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 3361, 5003, 6722, 10006, 13444, 16805, 20012, 25015, 26888, 33610, 40024, 50030, 67220, 100060, 104191, 134440, 155093, 200120, 208382, 310186, 416764, 520955, 620372, 775465, 833528, 1041910, 1240744, 1550930, 2083820, 3101860, 4167640, 6203720, 16815083, 33630166, 67260332, 84075415, 134520664, 168150830, 336301660, 521267573, 672603320, 1042535146, 2085070292, 2606337865, 4170140584, 5212675730, 10425351460, 20850702920]

約数ペア:

[(1, 20850702920), (2, 10425351460), (4, 5212675730), (5, 4170140584), (8, 2606337865), (10, 2085070292), (20, 1042535146), (31, 672603320), (40, 521267573), (62, 336301660), (124, 168150830), (155, 134520664), (248, 84075415), (310, 67260332), (620, 33630166), (1240, 16815083), (3361, 6203720), (5003, 4167640), (6722, 3101860), (10006, 2083820), (13444, 1550930), (16805, 1240744), (20012, 1041910), (25015, 833528), (26888, 775465), (33610, 620372), (40024, 520955), (50030, 416764), (67220, 310186), (100060, 208382), (104191, 200120), (134440, 155093)]