2143540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 5249664

約数和(自身を除く): 3106124

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 251, 305, 427, 502, 610, 854, 1004, 1220, 1255, 1708, 1757, 2135, 2510, 3514, 4270, 5020, 7028, 8540, 8785, 15311, 17570, 30622, 35140, 61244, 76555, 107177, 153110, 214354, 306220, 428708, 535885, 1071770, 2143540]

約数ペア:

[(1, 2143540), (2, 1071770), (4, 535885), (5, 428708), (7, 306220), (10, 214354), (14, 153110), (20, 107177), (28, 76555), (35, 61244), (61, 35140), (70, 30622), (122, 17570), (140, 15311), (244, 8785), (251, 8540), (305, 7028), (427, 5020), (502, 4270), (610, 3514), (854, 2510), (1004, 2135), (1220, 1757), (1255, 1708)]