19737160

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8089}}^1$

素因数の和:8161

約数の個数: 32

約数和(自身を含む): 45142200

約数和(自身を除く): 25405040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 8089, 16178, 32356, 40445, 64712, 80890, 161780, 323560, 493429, 986858, 1973716, 2467145, 3947432, 4934290, 9868580, 19737160]

約数ペア:

[(1, 19737160), (2, 9868580), (4, 4934290), (5, 3947432), (8, 2467145), (10, 1973716), (20, 986858), (40, 493429), (61, 323560), (122, 161780), (244, 80890), (305, 64712), (488, 40445), (610, 32356), (1220, 16178), (2440, 8089)]