20603128

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^2\times {\mathrm{311}}^1$

素因数の和:357

約数の個数: 72

約数和(自身を含む): 48817080

約数和(自身を除く): 28213952

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 49, 52, 56, 91, 98, 104, 169, 182, 196, 311, 338, 364, 392, 622, 637, 676, 728, 1183, 1244, 1274, 1352, 2177, 2366, 2488, 2548, 4043, 4354, 4732, 5096, 8086, 8281, 8708, 9464, 15239, 16172, 16562, 17416, 28301, 30478, 32344, 33124, 52559, 56602, 60956, 66248, 105118, 113204, 121912, 198107, 210236, 226408, 367913, 396214, 420472, 735826, 792428, 1471652, 1584856, 2575391, 2943304, 5150782, 10301564, 20603128]

約数ペア:

[(1, 20603128), (2, 10301564), (4, 5150782), (7, 2943304), (8, 2575391), (13, 1584856), (14, 1471652), (26, 792428), (28, 735826), (49, 420472), (52, 396214), (56, 367913), (91, 226408), (98, 210236), (104, 198107), (169, 121912), (182, 113204), (196, 105118), (311, 66248), (338, 60956), (364, 56602), (392, 52559), (622, 33124), (637, 32344), (676, 30478), (728, 28301), (1183, 17416), (1244, 16562), (1274, 16172), (1352, 15239), (2177, 9464), (2366, 8708), (2488, 8281), (2548, 8086), (4043, 5096), (4354, 4732)]