81717660

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{691}}^1$

素因数の和:785

約数の個数: 120

約数和(自身を含む): 260239056

約数和(自身を除く): 178521396

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 73, 81, 90, 108, 135, 146, 162, 180, 219, 270, 292, 324, 365, 405, 438, 540, 657, 691, 730, 810, 876, 1095, 1314, 1382, 1460, 1620, 1971, 2073, 2190, 2628, 2764, 3285, 3455, 3942, 4146, 4380, 5913, 6219, 6570, 6910, 7884, 8292, 9855, 10365, 11826, 12438, 13140, 13820, 18657, 19710, 20730, 23652, 24876, 29565, 31095, 37314, 39420, 41460, 50443, 55971, 59130, 62190, 74628, 93285, 100886, 111942, 118260, 124380, 151329, 186570, 201772, 223884, 252215, 279855, 302658, 373140, 453987, 504430, 559710, 605316, 756645, 907974, 1008860, 1119420, 1361961, 1513290, 1815948, 2269935, 2723922, 3026580, 4085883, 4539870, 5447844, 6809805, 8171766, 9079740, 13619610, 16343532, 20429415, 27239220, 40858830, 81717660]

約数ペア:

[(1, 81717660), (2, 40858830), (3, 27239220), (4, 20429415), (5, 16343532), (6, 13619610), (9, 9079740), (10, 8171766), (12, 6809805), (15, 5447844), (18, 4539870), (20, 4085883), (27, 3026580), (30, 2723922), (36, 2269935), (45, 1815948), (54, 1513290), (60, 1361961), (73, 1119420), (81, 1008860), (90, 907974), (108, 756645), (135, 605316), (146, 559710), (162, 504430), (180, 453987), (219, 373140), (270, 302658), (292, 279855), (324, 252215), (365, 223884), (405, 201772), (438, 186570), (540, 151329), (657, 124380), (691, 118260), (730, 111942), (810, 100886), (876, 93285), (1095, 74628), (1314, 62190), (1382, 59130), (1460, 55971), (1620, 50443), (1971, 41460), (2073, 39420), (2190, 37314), (2628, 31095), (2764, 29565), (3285, 24876), (3455, 23652), (3942, 20730), (4146, 19710), (4380, 18657), (5913, 13820), (6219, 13140), (6570, 12438), (6910, 11826), (7884, 10365), (8292, 9855)]