19917040

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1741}}^1$

素因数の和:1778

約数の個数: 80

約数和(自身を含む): 54434016

約数和(自身を除く): 34516976

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 176, 208, 220, 260, 286, 440, 520, 572, 715, 880, 1040, 1144, 1430, 1741, 2288, 2860, 3482, 5720, 6964, 8705, 11440, 13928, 17410, 19151, 22633, 27856, 34820, 38302, 45266, 69640, 76604, 90532, 95755, 113165, 139280, 153208, 181064, 191510, 226330, 248963, 306416, 362128, 383020, 452660, 497926, 766040, 905320, 995852, 1244815, 1532080, 1810640, 1991704, 2489630, 3983408, 4979260, 9958520, 19917040]

約数ペア:

[(1, 19917040), (2, 9958520), (4, 4979260), (5, 3983408), (8, 2489630), (10, 1991704), (11, 1810640), (13, 1532080), (16, 1244815), (20, 995852), (22, 905320), (26, 766040), (40, 497926), (44, 452660), (52, 383020), (55, 362128), (65, 306416), (80, 248963), (88, 226330), (104, 191510), (110, 181064), (130, 153208), (143, 139280), (176, 113165), (208, 95755), (220, 90532), (260, 76604), (286, 69640), (440, 45266), (520, 38302), (572, 34820), (715, 27856), (880, 22633), (1040, 19151), (1144, 17410), (1430, 13928), (1741, 11440), (2288, 8705), (2860, 6964), (3482, 5720)]