21787480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{293}}^1$

素因数の和:341

約数の個数: 96

約数和(自身を含む): 58106160

約数和(自身を除く): 36318680

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 169, 220, 260, 286, 293, 338, 440, 520, 572, 586, 676, 715, 845, 1144, 1172, 1352, 1430, 1465, 1690, 1859, 2344, 2860, 2930, 3223, 3380, 3718, 3809, 5720, 5860, 6446, 6760, 7436, 7618, 9295, 11720, 12892, 14872, 15236, 16115, 18590, 19045, 25784, 30472, 32230, 37180, 38090, 41899, 49517, 64460, 74360, 76180, 83798, 99034, 128920, 152360, 167596, 198068, 209495, 247585, 335192, 396136, 418990, 495170, 544687, 837980, 990340, 1089374, 1675960, 1980680, 2178748, 2723435, 4357496, 5446870, 10893740, 21787480]

約数ペア:

[(1, 21787480), (2, 10893740), (4, 5446870), (5, 4357496), (8, 2723435), (10, 2178748), (11, 1980680), (13, 1675960), (20, 1089374), (22, 990340), (26, 837980), (40, 544687), (44, 495170), (52, 418990), (55, 396136), (65, 335192), (88, 247585), (104, 209495), (110, 198068), (130, 167596), (143, 152360), (169, 128920), (220, 99034), (260, 83798), (286, 76180), (293, 74360), (338, 64460), (440, 49517), (520, 41899), (572, 38090), (586, 37180), (676, 32230), (715, 30472), (845, 25784), (1144, 19045), (1172, 18590), (1352, 16115), (1430, 15236), (1465, 14872), (1690, 12892), (1859, 11720), (2344, 9295), (2860, 7618), (2930, 7436), (3223, 6760), (3380, 6446), (3718, 5860), (3809, 5720)]