21480735

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1$

素因数の和:192

約数の個数: 64

約数和(自身を含む): 39398400

約数和(自身を除く): 17917665

約数列:

[1, 3, 5, 15, 19, 23, 29, 57, 69, 87, 95, 113, 115, 145, 285, 339, 345, 435, 437, 551, 565, 667, 1311, 1653, 1695, 2001, 2147, 2185, 2599, 2755, 3277, 3335, 6441, 6555, 7797, 8265, 9831, 10005, 10735, 12673, 12995, 16385, 32205, 38019, 38985, 49155, 49381, 62263, 63365, 75371, 148143, 186789, 190095, 226113, 246905, 311315, 376855, 740715, 933945, 1130565, 1432049, 4296147, 7160245, 21480735]

約数ペア:

[(1, 21480735), (3, 7160245), (5, 4296147), (15, 1432049), (19, 1130565), (23, 933945), (29, 740715), (57, 376855), (69, 311315), (87, 246905), (95, 226113), (113, 190095), (115, 186789), (145, 148143), (285, 75371), (339, 63365), (345, 62263), (435, 49381), (437, 49155), (551, 38985), (565, 38019), (667, 32205), (1311, 16385), (1653, 12995), (1695, 12673), (2001, 10735), (2147, 10005), (2185, 9831), (2599, 8265), (2755, 7797), (3277, 6555), (3335, 6441)]