20748828

素因数分解:

$2^2\times 3^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 49762944

約数和(自身を除く): 29014116

約数列:

[1, 2, 3, 4, 6, 12, 67, 131, 134, 197, 201, 262, 268, 393, 394, 402, 524, 591, 786, 788, 804, 1182, 1572, 2364, 8777, 13199, 17554, 25807, 26331, 26398, 35108, 39597, 51614, 52662, 52796, 77421, 79194, 103228, 105324, 154842, 158388, 309684, 1729069, 3458138, 5187207, 6916276, 10374414, 20748828]

約数ペア:

[(1, 20748828), (2, 10374414), (3, 6916276), (4, 5187207), (6, 3458138), (12, 1729069), (67, 309684), (131, 158388), (134, 154842), (197, 105324), (201, 103228), (262, 79194), (268, 77421), (393, 52796), (394, 52662), (402, 51614), (524, 39597), (591, 35108), (786, 26398), (788, 26331), (804, 25807), (1182, 17554), (1572, 13199), (2364, 8777)]