20434456

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 46080000

約数和(自身を除く): 25645544

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 79, 124, 149, 158, 217, 248, 298, 316, 434, 553, 596, 632, 868, 1043, 1106, 1192, 1736, 2086, 2212, 2449, 4172, 4424, 4619, 4898, 8344, 9238, 9796, 11771, 17143, 18476, 19592, 23542, 32333, 34286, 36952, 47084, 64666, 68572, 82397, 94168, 129332, 137144, 164794, 258664, 329588, 364901, 659176, 729802, 1459604, 2554307, 2919208, 5108614, 10217228, 20434456]

約数ペア:

[(1, 20434456), (2, 10217228), (4, 5108614), (7, 2919208), (8, 2554307), (14, 1459604), (28, 729802), (31, 659176), (56, 364901), (62, 329588), (79, 258664), (124, 164794), (149, 137144), (158, 129332), (217, 94168), (248, 82397), (298, 68572), (316, 64666), (434, 47084), (553, 36952), (596, 34286), (632, 32333), (868, 23542), (1043, 19592), (1106, 18476), (1192, 17143), (1736, 11771), (2086, 9796), (2212, 9238), (2449, 8344), (4172, 4898), (4424, 4619)]