21970802

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{547}}^1$

素因数の和:726

約数の個数: 32

約数和(自身を含む): 39982080

約数和(自身を除く): 18011278

約数列:

[1, 2, 7, 14, 19, 38, 133, 151, 266, 302, 547, 1057, 1094, 2114, 2869, 3829, 5738, 7658, 10393, 20083, 20786, 40166, 72751, 82597, 145502, 165194, 578179, 1156358, 1569343, 3138686, 10985401, 21970802]

約数ペア:

[(1, 21970802), (2, 10985401), (7, 3138686), (14, 1569343), (19, 1156358), (38, 578179), (133, 165194), (151, 145502), (266, 82597), (302, 72751), (547, 40166), (1057, 20786), (1094, 20083), (2114, 10393), (2869, 7658), (3829, 5738)]