21997535

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{1741}}^1$

素因数の和:1791

約数の個数: 24

約数和(自身を含む): 31857696

約数和(自身を除く): 9860161

約数列:

[1, 5, 7, 19, 35, 95, 133, 361, 665, 1741, 1805, 2527, 8705, 12187, 12635, 33079, 60935, 165395, 231553, 628501, 1157765, 3142505, 4399507, 21997535]

約数ペア:

[(1, 21997535), (5, 4399507), (7, 3142505), (19, 1157765), (35, 628501), (95, 231553), (133, 165395), (361, 60935), (665, 33079), (1741, 12635), (1805, 12187), (2527, 8705)]