20645170

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{463}}^1$

素因数の和:504

約数の個数: 64

約数和(自身を含む): 46771200

約数和(自身を除く): 26126030

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 343, 455, 463, 490, 637, 686, 910, 926, 1274, 1715, 2315, 3185, 3241, 3430, 4459, 4630, 6019, 6370, 6482, 8918, 12038, 16205, 22295, 22687, 30095, 32410, 42133, 44590, 45374, 60190, 84266, 113435, 158809, 210665, 226870, 294931, 317618, 421330, 589862, 794045, 1474655, 1588090, 2064517, 2949310, 4129034, 10322585, 20645170]

約数ペア:

[(1, 20645170), (2, 10322585), (5, 4129034), (7, 2949310), (10, 2064517), (13, 1588090), (14, 1474655), (26, 794045), (35, 589862), (49, 421330), (65, 317618), (70, 294931), (91, 226870), (98, 210665), (130, 158809), (182, 113435), (245, 84266), (343, 60190), (455, 45374), (463, 44590), (490, 42133), (637, 32410), (686, 30095), (910, 22687), (926, 22295), (1274, 16205), (1715, 12038), (2315, 8918), (3185, 6482), (3241, 6370), (3430, 6019), (4459, 4630)]