21620284

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{509}}^1$

素因数の和:598

約数の個数: 48

約数和(自身を含む): 45581760

約数和(自身を除く): 23961476

約数列:

[1, 2, 4, 7, 14, 28, 37, 41, 74, 82, 148, 164, 259, 287, 509, 518, 574, 1018, 1036, 1148, 1517, 2036, 3034, 3563, 6068, 7126, 10619, 14252, 18833, 20869, 21238, 37666, 41738, 42476, 75332, 83476, 131831, 146083, 263662, 292166, 527324, 584332, 772153, 1544306, 3088612, 5405071, 10810142, 21620284]

約数ペア:

[(1, 21620284), (2, 10810142), (4, 5405071), (7, 3088612), (14, 1544306), (28, 772153), (37, 584332), (41, 527324), (74, 292166), (82, 263662), (148, 146083), (164, 131831), (259, 83476), (287, 75332), (509, 42476), (518, 41738), (574, 37666), (1018, 21238), (1036, 20869), (1148, 18833), (1517, 14252), (2036, 10619), (3034, 7126), (3563, 6068)]