20561618

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1$

素因数の和:183

約数の個数: 64

約数和(自身を含む): 40919040

約数和(自身を除く): 20357422

約数列:

[1, 2, 7, 11, 14, 22, 31, 59, 62, 73, 77, 118, 146, 154, 217, 341, 413, 434, 511, 649, 682, 803, 826, 1022, 1298, 1606, 1829, 2263, 2387, 3658, 4307, 4526, 4543, 4774, 5621, 8614, 9086, 11242, 12803, 15841, 20119, 24893, 25606, 30149, 31682, 40238, 47377, 49786, 60298, 94754, 133517, 140833, 174251, 267034, 281666, 331639, 348502, 663278, 934619, 1468687, 1869238, 2937374, 10280809, 20561618]

約数ペア:

[(1, 20561618), (2, 10280809), (7, 2937374), (11, 1869238), (14, 1468687), (22, 934619), (31, 663278), (59, 348502), (62, 331639), (73, 281666), (77, 267034), (118, 174251), (146, 140833), (154, 133517), (217, 94754), (341, 60298), (413, 49786), (434, 47377), (511, 40238), (649, 31682), (682, 30149), (803, 25606), (826, 24893), (1022, 20119), (1298, 15841), (1606, 12803), (1829, 11242), (2263, 9086), (2387, 8614), (3658, 5621), (4307, 4774), (4526, 4543)]