20739528080

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1669}}^1\times {\mathrm{9137}}^1$

素因数の和:10836

約数の個数: 80

約数和(自身を含む): 51092020080

約数和(自身を除く): 30352492000

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 1669, 3338, 6676, 8345, 9137, 13352, 16690, 18274, 26704, 28373, 33380, 36548, 45685, 56746, 66760, 73096, 91370, 113492, 133520, 141865, 146192, 155329, 182740, 226984, 283730, 310658, 365480, 453968, 567460, 621316, 730960, 776645, 1134920, 1242632, 1553290, 2269840, 2485264, 3106580, 6213160, 12426320, 15249653, 30499306, 60998612, 76248265, 121997224, 152496530, 243994448, 259244101, 304993060, 518488202, 609986120, 1036976404, 1219972240, 1296220505, 2073952808, 2592441010, 4147905616, 5184882020, 10369764040, 20739528080]

約数ペア:

[(1, 20739528080), (2, 10369764040), (4, 5184882020), (5, 4147905616), (8, 2592441010), (10, 2073952808), (16, 1296220505), (17, 1219972240), (20, 1036976404), (34, 609986120), (40, 518488202), (68, 304993060), (80, 259244101), (85, 243994448), (136, 152496530), (170, 121997224), (272, 76248265), (340, 60998612), (680, 30499306), (1360, 15249653), (1669, 12426320), (3338, 6213160), (6676, 3106580), (8345, 2485264), (9137, 2269840), (13352, 1553290), (16690, 1242632), (18274, 1134920), (26704, 776645), (28373, 730960), (33380, 621316), (36548, 567460), (45685, 453968), (56746, 365480), (66760, 310658), (73096, 283730), (91370, 226984), (113492, 182740), (133520, 155329), (141865, 146192)]