21117177720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{177217}}^1$

素因数の和:177565

約数の個数: 96

約数和(自身を含む): 68838559920

約数和(自身を除く): 47721382200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 331, 360, 662, 993, 1324, 1655, 1986, 2648, 2979, 3310, 3972, 4965, 5958, 6620, 7944, 9930, 11916, 13240, 14895, 19860, 23832, 29790, 39720, 59580, 119160, 177217, 354434, 531651, 708868, 886085, 1063302, 1417736, 1594953, 1772170, 2126604, 2658255, 3189906, 3544340, 4253208, 5316510, 6379812, 7088680, 7974765, 10633020, 12759624, 15949530, 21266040, 31899060, 58658827, 63798120, 117317654, 175976481, 234635308, 293294135, 351952962, 469270616, 527929443, 586588270, 703905924, 879882405, 1055858886, 1173176540, 1407811848, 1759764810, 2111717772, 2346353080, 2639647215, 3519529620, 4223435544, 5279294430, 7039059240, 10558588860, 21117177720]

約数ペア:

[(1, 21117177720), (2, 10558588860), (3, 7039059240), (4, 5279294430), (5, 4223435544), (6, 3519529620), (8, 2639647215), (9, 2346353080), (10, 2111717772), (12, 1759764810), (15, 1407811848), (18, 1173176540), (20, 1055858886), (24, 879882405), (30, 703905924), (36, 586588270), (40, 527929443), (45, 469270616), (60, 351952962), (72, 293294135), (90, 234635308), (120, 175976481), (180, 117317654), (331, 63798120), (360, 58658827), (662, 31899060), (993, 21266040), (1324, 15949530), (1655, 12759624), (1986, 10633020), (2648, 7974765), (2979, 7088680), (3310, 6379812), (3972, 5316510), (4965, 4253208), (5958, 3544340), (6620, 3189906), (7944, 2658255), (9930, 2126604), (11916, 1772170), (13240, 1594953), (14895, 1417736), (19860, 1063302), (23832, 886085), (29790, 708868), (39720, 531651), (59580, 354434), (119160, 177217)]