21388881381

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{503}}^1\times {\mathrm{6269}}^1$

素因数の和:6818

約数の個数: 64

約数和(自身を含む): 36404121600

約数和(自身を除く): 15015240219

約数列:

[1, 3, 7, 17, 19, 21, 51, 57, 119, 133, 323, 357, 399, 503, 969, 1509, 2261, 3521, 6269, 6783, 8551, 9557, 10563, 18807, 25653, 28671, 43883, 59857, 66899, 106573, 119111, 131649, 162469, 179571, 200697, 319719, 357333, 487407, 746011, 833777, 1137283, 2024887, 2238033, 2501331, 3153307, 3411849, 6074661, 9459921, 14174209, 22073149, 42522627, 53606219, 59912833, 66219447, 160818657, 179738499, 375243533, 419389831, 1018518161, 1125730599, 1258169493, 3055554483, 7129627127, 21388881381]

約数ペア:

[(1, 21388881381), (3, 7129627127), (7, 3055554483), (17, 1258169493), (19, 1125730599), (21, 1018518161), (51, 419389831), (57, 375243533), (119, 179738499), (133, 160818657), (323, 66219447), (357, 59912833), (399, 53606219), (503, 42522627), (969, 22073149), (1509, 14174209), (2261, 9459921), (3521, 6074661), (6269, 3411849), (6783, 3153307), (8551, 2501331), (9557, 2238033), (10563, 2024887), (18807, 1137283), (25653, 833777), (28671, 746011), (43883, 487407), (59857, 357333), (66899, 319719), (106573, 200697), (119111, 179571), (131649, 162469)]