81947320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{479}}^1$

素因数の和:557

約数の個数: 128

約数和(自身を含む): 232243200

約数和(自身を除く): 150295880

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 47, 52, 56, 65, 70, 91, 94, 104, 130, 140, 182, 188, 235, 260, 280, 329, 364, 376, 455, 470, 479, 520, 611, 658, 728, 910, 940, 958, 1222, 1316, 1645, 1820, 1880, 1916, 2395, 2444, 2632, 3055, 3290, 3353, 3640, 3832, 4277, 4790, 4888, 6110, 6227, 6580, 6706, 8554, 9580, 12220, 12454, 13160, 13412, 16765, 17108, 19160, 21385, 22513, 24440, 24908, 26824, 31135, 33530, 34216, 42770, 43589, 45026, 49816, 62270, 67060, 85540, 87178, 90052, 112565, 124540, 134120, 157591, 171080, 174356, 180104, 217945, 225130, 249080, 292669, 315182, 348712, 435890, 450260, 585338, 630364, 787955, 871780, 900520, 1170676, 1260728, 1463345, 1575910, 1743560, 2048683, 2341352, 2926690, 3151820, 4097366, 5853380, 6303640, 8194732, 10243415, 11706760, 16389464, 20486830, 40973660, 81947320]

約数ペア:

[(1, 81947320), (2, 40973660), (4, 20486830), (5, 16389464), (7, 11706760), (8, 10243415), (10, 8194732), (13, 6303640), (14, 5853380), (20, 4097366), (26, 3151820), (28, 2926690), (35, 2341352), (40, 2048683), (47, 1743560), (52, 1575910), (56, 1463345), (65, 1260728), (70, 1170676), (91, 900520), (94, 871780), (104, 787955), (130, 630364), (140, 585338), (182, 450260), (188, 435890), (235, 348712), (260, 315182), (280, 292669), (329, 249080), (364, 225130), (376, 217945), (455, 180104), (470, 174356), (479, 171080), (520, 157591), (611, 134120), (658, 124540), (728, 112565), (910, 90052), (940, 87178), (958, 85540), (1222, 67060), (1316, 62270), (1645, 49816), (1820, 45026), (1880, 43589), (1916, 42770), (2395, 34216), (2444, 33530), (2632, 31135), (3055, 26824), (3290, 24908), (3353, 24440), (3640, 22513), (3832, 21385), (4277, 19160), (4790, 17108), (4888, 16765), (6110, 13412), (6227, 13160), (6580, 12454), (6706, 12220), (8554, 9580)]