20144560

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{457}}^1$

素因数の和:518

約数の個数: 80

約数和(自身を含む): 51112800

約数和(自身を除く): 30968240

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 29, 38, 40, 58, 76, 80, 95, 116, 145, 152, 190, 232, 290, 304, 380, 457, 464, 551, 580, 760, 914, 1102, 1160, 1520, 1828, 2204, 2285, 2320, 2755, 3656, 4408, 4570, 5510, 7312, 8683, 8816, 9140, 11020, 13253, 17366, 18280, 22040, 26506, 34732, 36560, 43415, 44080, 53012, 66265, 69464, 86830, 106024, 132530, 138928, 173660, 212048, 251807, 265060, 347320, 503614, 530120, 694640, 1007228, 1060240, 1259035, 2014456, 2518070, 4028912, 5036140, 10072280, 20144560]

約数ペア:

[(1, 20144560), (2, 10072280), (4, 5036140), (5, 4028912), (8, 2518070), (10, 2014456), (16, 1259035), (19, 1060240), (20, 1007228), (29, 694640), (38, 530120), (40, 503614), (58, 347320), (76, 265060), (80, 251807), (95, 212048), (116, 173660), (145, 138928), (152, 132530), (190, 106024), (232, 86830), (290, 69464), (304, 66265), (380, 53012), (457, 44080), (464, 43415), (551, 36560), (580, 34732), (760, 26506), (914, 22040), (1102, 18280), (1160, 17366), (1520, 13253), (1828, 11020), (2204, 9140), (2285, 8816), (2320, 8683), (2755, 7312), (3656, 5510), (4408, 4570)]