20100794420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2353723}}^1$

素因数の和:2353800

約数の個数: 48

約数和(自身を含む): 49032778368

約数和(自身を除く): 28931983948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2135, 4270, 8540, 2353723, 4707446, 9414892, 11768615, 16476061, 23537230, 32952122, 47074460, 65904244, 82380305, 143577103, 164760610, 287154206, 329521220, 574308412, 717885515, 1005039721, 1435771030, 2010079442, 2871542060, 4020158884, 5025198605, 10050397210, 20100794420]

約数ペア:

[(1, 20100794420), (2, 10050397210), (4, 5025198605), (5, 4020158884), (7, 2871542060), (10, 2010079442), (14, 1435771030), (20, 1005039721), (28, 717885515), (35, 574308412), (61, 329521220), (70, 287154206), (122, 164760610), (140, 143577103), (244, 82380305), (305, 65904244), (427, 47074460), (610, 32952122), (854, 23537230), (1220, 16476061), (1708, 11768615), (2135, 9414892), (4270, 4707446), (8540, 2353723)]