21438480

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{1823}}^1$

素因数の和:1853

約数の個数: 120

約数和(自身を含む): 77352192

約数和(自身を除く): 55913712

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1470, 1680, 1823, 1960, 2352, 2940, 3646, 3920, 5469, 5880, 7292, 9115, 10938, 11760, 12761, 14584, 18230, 21876, 25522, 27345, 29168, 36460, 38283, 43752, 51044, 54690, 63805, 72920, 76566, 87504, 89327, 102088, 109380, 127610, 145840, 153132, 178654, 191415, 204176, 218760, 255220, 267981, 306264, 357308, 382830, 437520, 446635, 510440, 535962, 612528, 714616, 765660, 893270, 1020880, 1071924, 1339905, 1429232, 1531320, 1786540, 2143848, 2679810, 3062640, 3573080, 4287696, 5359620, 7146160, 10719240, 21438480]

約数ペア:

[(1, 21438480), (2, 10719240), (3, 7146160), (4, 5359620), (5, 4287696), (6, 3573080), (7, 3062640), (8, 2679810), (10, 2143848), (12, 1786540), (14, 1531320), (15, 1429232), (16, 1339905), (20, 1071924), (21, 1020880), (24, 893270), (28, 765660), (30, 714616), (35, 612528), (40, 535962), (42, 510440), (48, 446635), (49, 437520), (56, 382830), (60, 357308), (70, 306264), (80, 267981), (84, 255220), (98, 218760), (105, 204176), (112, 191415), (120, 178654), (140, 153132), (147, 145840), (168, 127610), (196, 109380), (210, 102088), (240, 89327), (245, 87504), (280, 76566), (294, 72920), (336, 63805), (392, 54690), (420, 51044), (490, 43752), (560, 38283), (588, 36460), (735, 29168), (784, 27345), (840, 25522), (980, 21876), (1176, 18230), (1470, 14584), (1680, 12761), (1823, 11760), (1960, 10938), (2352, 9115), (2940, 7292), (3646, 5880), (3920, 5469)]