20647914

素因数分解:

$2^1\times 3^1\times 7^3\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:232

約数の個数: 64

約数和(自身を含む): 49152000

約数和(自身を除く): 28504086

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 79, 98, 127, 147, 158, 237, 254, 294, 343, 381, 474, 553, 686, 762, 889, 1029, 1106, 1659, 1778, 2058, 2667, 3318, 3871, 5334, 6223, 7742, 10033, 11613, 12446, 18669, 20066, 23226, 27097, 30099, 37338, 43561, 54194, 60198, 70231, 81291, 87122, 130683, 140462, 162582, 210693, 261366, 421386, 491617, 983234, 1474851, 2949702, 3441319, 6882638, 10323957, 20647914]

約数ペア:

[(1, 20647914), (2, 10323957), (3, 6882638), (6, 3441319), (7, 2949702), (14, 1474851), (21, 983234), (42, 491617), (49, 421386), (79, 261366), (98, 210693), (127, 162582), (147, 140462), (158, 130683), (237, 87122), (254, 81291), (294, 70231), (343, 60198), (381, 54194), (474, 43561), (553, 37338), (686, 30099), (762, 27097), (889, 23226), (1029, 20066), (1106, 18669), (1659, 12446), (1778, 11613), (2058, 10033), (2667, 7742), (3318, 6223), (3871, 5334)]