20653605

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{379}}^1$

素因数の和:570

約数の個数: 48

約数和(自身を含む): 41258880

約数和(自身を除く): 20605275

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 173, 315, 379, 519, 865, 1137, 1211, 1557, 1895, 2595, 2653, 3411, 3633, 5685, 6055, 7785, 7959, 10899, 13265, 17055, 18165, 23877, 39795, 54495, 65567, 119385, 196701, 327835, 458969, 590103, 983505, 1376907, 2294845, 2950515, 4130721, 6884535, 20653605]

約数ペア:

[(1, 20653605), (3, 6884535), (5, 4130721), (7, 2950515), (9, 2294845), (15, 1376907), (21, 983505), (35, 590103), (45, 458969), (63, 327835), (105, 196701), (173, 119385), (315, 65567), (379, 54495), (519, 39795), (865, 23877), (1137, 18165), (1211, 17055), (1557, 13265), (1895, 10899), (2595, 7959), (2653, 7785), (3411, 6055), (3633, 5685)]