19512720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{661}}^1$

素因数の和:721

約数の個数: 120

約数和(自身を含む): 67230072

約数和(自身を除く): 47717352

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 41, 45, 48, 60, 72, 80, 82, 90, 120, 123, 144, 164, 180, 205, 240, 246, 328, 360, 369, 410, 492, 615, 656, 661, 720, 738, 820, 984, 1230, 1322, 1476, 1640, 1845, 1968, 1983, 2460, 2644, 2952, 3280, 3305, 3690, 3966, 4920, 5288, 5904, 5949, 6610, 7380, 7932, 9840, 9915, 10576, 11898, 13220, 14760, 15864, 19830, 23796, 26440, 27101, 29520, 29745, 31728, 39660, 47592, 52880, 54202, 59490, 79320, 81303, 95184, 108404, 118980, 135505, 158640, 162606, 216808, 237960, 243909, 271010, 325212, 406515, 433616, 475920, 487818, 542020, 650424, 813030, 975636, 1084040, 1219545, 1300848, 1626060, 1951272, 2168080, 2439090, 3252120, 3902544, 4878180, 6504240, 9756360, 19512720]

約数ペア:

[(1, 19512720), (2, 9756360), (3, 6504240), (4, 4878180), (5, 3902544), (6, 3252120), (8, 2439090), (9, 2168080), (10, 1951272), (12, 1626060), (15, 1300848), (16, 1219545), (18, 1084040), (20, 975636), (24, 813030), (30, 650424), (36, 542020), (40, 487818), (41, 475920), (45, 433616), (48, 406515), (60, 325212), (72, 271010), (80, 243909), (82, 237960), (90, 216808), (120, 162606), (123, 158640), (144, 135505), (164, 118980), (180, 108404), (205, 95184), (240, 81303), (246, 79320), (328, 59490), (360, 54202), (369, 52880), (410, 47592), (492, 39660), (615, 31728), (656, 29745), (661, 29520), (720, 27101), (738, 26440), (820, 23796), (984, 19830), (1230, 15864), (1322, 14760), (1476, 13220), (1640, 11898), (1845, 10576), (1968, 9915), (1983, 9840), (2460, 7932), (2644, 7380), (2952, 6610), (3280, 5949), (3305, 5904), (3690, 5288), (3966, 4920)]