21961576

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{311}}^1$

素因数の和:434

約数の個数: 64

約数和(自身を含む): 51367680

約数和(自身を除く): 29406104

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 97, 104, 182, 194, 311, 364, 388, 622, 679, 728, 776, 1244, 1261, 1358, 2177, 2488, 2522, 2716, 4043, 4354, 5044, 5432, 8086, 8708, 8827, 10088, 16172, 17416, 17654, 28301, 30167, 32344, 35308, 56602, 60334, 70616, 113204, 120668, 211169, 226408, 241336, 392171, 422338, 784342, 844676, 1568684, 1689352, 2745197, 3137368, 5490394, 10980788, 21961576]

約数ペア:

[(1, 21961576), (2, 10980788), (4, 5490394), (7, 3137368), (8, 2745197), (13, 1689352), (14, 1568684), (26, 844676), (28, 784342), (52, 422338), (56, 392171), (91, 241336), (97, 226408), (104, 211169), (182, 120668), (194, 113204), (311, 70616), (364, 60334), (388, 56602), (622, 35308), (679, 32344), (728, 30167), (776, 28301), (1244, 17654), (1261, 17416), (1358, 16172), (2177, 10088), (2488, 8827), (2522, 8708), (2716, 8086), (4043, 5432), (4354, 5044)]