20654620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:179

約数の個数: 96

約数和(自身を含む): 52512768

約数和(自身を除く): 31858148

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 47, 70, 73, 86, 94, 140, 146, 172, 188, 215, 235, 292, 301, 329, 365, 430, 470, 511, 602, 658, 730, 860, 940, 1022, 1204, 1316, 1460, 1505, 1645, 2021, 2044, 2555, 3010, 3139, 3290, 3431, 4042, 5110, 6020, 6278, 6580, 6862, 8084, 10105, 10220, 12556, 13724, 14147, 15695, 17155, 20210, 21973, 24017, 28294, 31390, 34310, 40420, 43946, 48034, 56588, 62780, 68620, 70735, 87892, 96068, 109865, 120085, 141470, 147533, 219730, 240170, 282940, 295066, 439460, 480340, 590132, 737665, 1032731, 1475330, 2065462, 2950660, 4130924, 5163655, 10327310, 20654620]

約数ペア:

[(1, 20654620), (2, 10327310), (4, 5163655), (5, 4130924), (7, 2950660), (10, 2065462), (14, 1475330), (20, 1032731), (28, 737665), (35, 590132), (43, 480340), (47, 439460), (70, 295066), (73, 282940), (86, 240170), (94, 219730), (140, 147533), (146, 141470), (172, 120085), (188, 109865), (215, 96068), (235, 87892), (292, 70735), (301, 68620), (329, 62780), (365, 56588), (430, 48034), (470, 43946), (511, 40420), (602, 34310), (658, 31390), (730, 28294), (860, 24017), (940, 21973), (1022, 20210), (1204, 17155), (1316, 15695), (1460, 14147), (1505, 13724), (1645, 12556), (2021, 10220), (2044, 10105), (2555, 8084), (3010, 6862), (3139, 6580), (3290, 6278), (3431, 6020), (4042, 5110)]