21690216

素因数分解:

$2^3\times 3^2\times {\mathrm{71}}^1\times {\mathrm{4243}}^1$

素因数の和:4326

約数の個数: 48

約数和(自身を含む): 59585760

約数和(自身を除く): 37895544

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 71, 72, 142, 213, 284, 426, 568, 639, 852, 1278, 1704, 2556, 4243, 5112, 8486, 12729, 16972, 25458, 33944, 38187, 50916, 76374, 101832, 152748, 301253, 305496, 602506, 903759, 1205012, 1807518, 2410024, 2711277, 3615036, 5422554, 7230072, 10845108, 21690216]

約数ペア:

[(1, 21690216), (2, 10845108), (3, 7230072), (4, 5422554), (6, 3615036), (8, 2711277), (9, 2410024), (12, 1807518), (18, 1205012), (24, 903759), (36, 602506), (71, 305496), (72, 301253), (142, 152748), (213, 101832), (284, 76374), (426, 50916), (568, 38187), (639, 33944), (852, 25458), (1278, 16972), (1704, 12729), (2556, 8486), (4243, 5112)]