20979608

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3307}}^1$

素因数の和:3387

約数の個数: 32

約数和(自身を含む): 43070160

約数和(自身を除く): 22090552

約数列:

[1, 2, 4, 8, 13, 26, 52, 61, 104, 122, 244, 488, 793, 1586, 3172, 3307, 6344, 6614, 13228, 26456, 42991, 85982, 171964, 201727, 343928, 403454, 806908, 1613816, 2622451, 5244902, 10489804, 20979608]

約数ペア:

[(1, 20979608), (2, 10489804), (4, 5244902), (8, 2622451), (13, 1613816), (26, 806908), (52, 403454), (61, 343928), (104, 201727), (122, 171964), (244, 85982), (488, 42991), (793, 26456), (1586, 13228), (3172, 6614), (3307, 6344)]